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Vulnerability details: VCID-4bzd-xbmz-aaaj
Vulnerability ID VCID-4bzd-xbmz-aaaj
Aliases CVE-2018-20843
Summary In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-611 Improper Restriction of XML External Entity Reference
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3.1 7.5 http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
ssvc Track http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-20843.html
rhas Important https://access.redhat.com/errata/RHSA-2020:2644
rhas Important https://access.redhat.com/errata/RHSA-2020:2646
rhas Moderate https://access.redhat.com/errata/RHSA-2020:3952
rhas Moderate https://access.redhat.com/errata/RHSA-2020:4484
rhas Moderate https://access.redhat.com/errata/RHSA-2020:4846
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20843.json
epss 0.00775 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00775 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00785 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.00787 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.01403 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05686 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05686 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05686 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05686 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05686 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05817 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05833 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05833 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.05967 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.0988 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.11893 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.50663 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.58200 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.70350 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.70350 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.70350 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
epss 0.70350 https://api.first.org/data/v1/epss?cve=CVE-2018-20843
cvssv3.1 7.5 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
generic_textual Low https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
ssvc Track https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1723723
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20843
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
generic_textual Low https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
ssvc Track https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
cvssv3.1 7.5 https://github.com/libexpat/libexpat/issues/186
ssvc Track https://github.com/libexpat/libexpat/issues/186
cvssv3.1 7.5 https://github.com/libexpat/libexpat/pull/262
generic_textual Low https://github.com/libexpat/libexpat/pull/262
ssvc Track https://github.com/libexpat/libexpat/pull/262
cvssv3.1 7.5 https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
generic_textual Low https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
ssvc Track https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
ssvc Track https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2018-20843
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-20843
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-20843
cvssv3.1 7.5 https://seclists.org/bugtraq/2019/Jun/39
ssvc Track https://seclists.org/bugtraq/2019/Jun/39
cvssv3.1 7.5 https://security.gentoo.org/glsa/201911-08
ssvc Track https://security.gentoo.org/glsa/201911-08
cvssv3.1 7.5 https://security.netapp.com/advisory/ntap-20190703-0001/
ssvc Track https://security.netapp.com/advisory/ntap-20190703-0001/
cvssv3.1 7.5 https://support.f5.com/csp/article/K51011533
ssvc Track https://support.f5.com/csp/article/K51011533
generic_textual Low https://ubuntu.com/security/notices/USN-4040-1
generic_textual Low https://ubuntu.com/security/notices/USN-4040-2
cvssv3.1 7.5 https://usn.ubuntu.com/4040-1/
ssvc Track https://usn.ubuntu.com/4040-1/
cvssv3.1 7.5 https://usn.ubuntu.com/4040-2/
ssvc Track https://usn.ubuntu.com/4040-2/
generic_textual Low https://usn.ubuntu.com/usn/usn-4040-1
generic_textual Low https://usn.ubuntu.com/usn/usn-4040-2
cvssv3.1 7.5 https://www.debian.org/security/2019/dsa-4472
ssvc Track https://www.debian.org/security/2019/dsa-4472
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuapr2020.html
cvssv3.1 9.8 https://www.oracle.com/security-alerts/cpuapr2020.html
generic_textual CRITICAL https://www.oracle.com/security-alerts/cpuapr2020.html
ssvc Track https://www.oracle.com/security-alerts/cpuapr2020.html
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuApr2021.html
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuApr2021.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpuApr2021.html
ssvc Track https://www.oracle.com/security-alerts/cpuApr2021.html
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuoct2020.html
cvssv3.1 9.8 https://www.oracle.com/security-alerts/cpuoct2020.html
generic_textual CRITICAL https://www.oracle.com/security-alerts/cpuoct2020.html
ssvc Track https://www.oracle.com/security-alerts/cpuoct2020.html
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpuoct2021.html
cvssv3.1 8.2 https://www.oracle.com/security-alerts/cpuoct2021.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpuoct2021.html
ssvc Track https://www.oracle.com/security-alerts/cpuoct2021.html
cvssv3.1 7.5 https://www.tenable.com/security/tns-2021-11
ssvc Track https://www.tenable.com/security/tns-2021-11
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-20843.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20843.json
https://api.first.org/data/v1/epss?cve=CVE-2018-20843
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20843
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
https://github.com/libexpat/libexpat/issues/186
https://github.com/libexpat/libexpat/pull/262
https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
https://seclists.org/bugtraq/2019/Jun/39
https://security.gentoo.org/glsa/201911-08
https://security.netapp.com/advisory/ntap-20190703-0001/
https://support.f5.com/csp/article/K51011533
https://ubuntu.com/security/notices/USN-4040-1
https://ubuntu.com/security/notices/USN-4040-2
https://usn.ubuntu.com/4040-1/
https://usn.ubuntu.com/4040-2/
https://usn.ubuntu.com/usn/usn-4040-1
https://usn.ubuntu.com/usn/usn-4040-2
https://www.debian.org/security/2019/dsa-4472
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.tenable.com/security/tns-2021-11
1723723 https://bugzilla.redhat.com/show_bug.cgi?id=1723723
931031 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931031
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:hospitality_res_3700:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:hospitality_res_3700:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.1.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:http_server:12.1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:outside_in_technology:8.5.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:outside_in_technology:8.5.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
CVE-2018-20843 https://nvd.nist.gov/vuln/detail/CVE-2018-20843
RHSA-2020:2644 https://access.redhat.com/errata/RHSA-2020:2644
RHSA-2020:2646 https://access.redhat.com/errata/RHSA-2020:2646
RHSA-2020:3952 https://access.redhat.com/errata/RHSA-2020:3952
RHSA-2020:4484 https://access.redhat.com/errata/RHSA-2020:4484
RHSA-2020:4846 https://access.redhat.com/errata/RHSA-2020:4846
RHSA-2021:0949 https://access.redhat.com/errata/RHSA-2021:0949
USN-7199-1 https://usn.ubuntu.com/7199-1/
USN-USN-4852-1 https://usn.ubuntu.com/USN-4852-1/
USN-USN-5455-1 https://usn.ubuntu.com/USN-5455-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20843.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/libexpat/libexpat/issues/186
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://github.com/libexpat/libexpat/issues/186
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/libexpat/libexpat/pull/262
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://github.com/libexpat/libexpat/pull/262
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2018-20843
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-20843
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-20843
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://seclists.org/bugtraq/2019/Jun/39
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://seclists.org/bugtraq/2019/Jun/39
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.gentoo.org/glsa/201911-08
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://security.gentoo.org/glsa/201911-08
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.netapp.com/advisory/ntap-20190703-0001/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://security.netapp.com/advisory/ntap-20190703-0001/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://support.f5.com/csp/article/K51011533
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://support.f5.com/csp/article/K51011533
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://usn.ubuntu.com/4040-1/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://usn.ubuntu.com/4040-1/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://usn.ubuntu.com/4040-2/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://usn.ubuntu.com/4040-2/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.debian.org/security/2019/dsa-4472
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.debian.org/security/2019/dsa-4472
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuapr2020.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.oracle.com/security-alerts/cpuapr2020.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.oracle.com/security-alerts/cpuapr2020.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://www.oracle.com/security-alerts/cpuApr2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuApr2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.oracle.com/security-alerts/cpuApr2021.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuoct2020.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.oracle.com/security-alerts/cpuoct2020.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.oracle.com/security-alerts/cpuoct2020.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.tenable.com/security/tns-2021-11
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-30T19:37:31Z/ Found at https://www.tenable.com/security/tns-2021-11
Exploit Prediction Scoring System (EPSS)
Percentile 0.71434
EPSS Score 0.00775
Published At April 13, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.