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Vulnerability details: VCID-5574-wvcw-zqbg
Vulnerability ID VCID-5574-wvcw-zqbg
Aliases CVE-2021-37150
Summary Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to request secure resources. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00205 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
epss 0.00235 https://api.first.org/data/v1/epss?cve=CVE-2021-37150
cvssv3.1 4.2 https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
ssvc Track https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
cvssv3.1 4.2 https://lists.debian.org/debian-lts-announce/2023/01/msg00019.html
ssvc Track https://lists.debian.org/debian-lts-announce/2023/01/msg00019.html
cvssv3.1 4.2 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
cvssv3.1 4.2 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-37150
cvssv3.1 4.2 https://www.debian.org/security/2022/dsa-5206
ssvc Track https://www.debian.org/security/2022/dsa-5206
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-37150
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37150
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25763
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28129
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31778
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31780
https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
https://lists.debian.org/debian-lts-announce/2023/01/msg00019.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
https://www.debian.org/security/2022/dsa-5206
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
CVE-2021-37150 https://nvd.nist.gov/vuln/detail/CVE-2021-37150
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
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:N/T:P/P:M/B:A/M:M/D:T/2025-09-08T18:45:09Z/ Found at https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2023/01/msg00019.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:N/T:P/P:M/B:A/M:M/D:T/2025-09-08T18:45:09Z/ Found at https://lists.debian.org/debian-lts-announce/2023/01/msg00019.html
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
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:N/T:P/P:M/B:A/M:M/D:T/2025-09-08T18:45:09Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
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:N/T:P/P:M/B:A/M:M/D:T/2025-09-08T18:45:09Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
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-2021-37150
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:L/UI:N/S:U/C:L/I:L/A:N Found at https://www.debian.org/security/2022/dsa-5206
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:N/T:P/P:M/B:A/M:M/D:T/2025-09-08T18:45:09Z/ Found at https://www.debian.org/security/2022/dsa-5206
Exploit Prediction Scoring System (EPSS)
Percentile 0.42775
EPSS Score 0.00205
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T12:20:27.580890+00:00 EPSS Importer Import https://epss.cyentia.com/epss_scores-current.csv.gz 37.0.0