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Vulnerability details: VCID-a7cg-46em-5uaa
Vulnerability ID VCID-a7cg-46em-5uaa
Aliases CVE-2020-8231
Summary Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (5)
CWE-825 Expired Pointer Dereference
CWE-822 Untrusted Pointer Dereference
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-416 Use After Free
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 3.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8231.json
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00081 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
epss 0.00111 https://api.first.org/data/v1/epss?cve=CVE-2020-8231
cvssv3.1 Low https://curl.se/docs/CVE-2020-8231.html
cvssv3.1 3.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-8231
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-8231
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8231.json
https://api.first.org/data/v1/epss?cve=CVE-2020-8231
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://curl.haxx.se/docs/CVE-2020-8231.html
https://curl.se/docs/CVE-2020-8231.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8169
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8177
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8231
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8284
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8285
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8286
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22876
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22890
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://hackerone.com/reports/948876
https://www.oracle.com/security-alerts/cpuapr2022.html
1868032 https://bugzilla.redhat.com/show_bug.cgi?id=1868032
968831 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968831
cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2020-8231 https://nvd.nist.gov/vuln/detail/CVE-2020-8231
RHSA-2021:1610 https://access.redhat.com/errata/RHSA-2021:1610
USN-4466-1 https://usn.ubuntu.com/4466-1/
USN-4466-2 https://usn.ubuntu.com/4466-2/
USN-4665-1 https://usn.ubuntu.com/4665-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8231.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:H/PR:N/UI:N/S:U/C:L/I:N/A:N 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: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-8231
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:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-8231
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.24663
EPSS Score 0.00081
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:35:54.234743+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4466-1/ 37.0.0