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Vulnerability details: VCID-gyxq-t3k6-4kdq
Vulnerability ID VCID-gyxq-t3k6-4kdq
Aliases CVE-2021-3185
Summary A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause the stack to be smashed, memory corruption and possibly code execution.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-787 Out-of-bounds Write
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-121 Stack-based Buffer Overflow
System Score Found at
cvssv3 7.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3185.json
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00433 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00518 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00518 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
epss 0.00668 https://api.first.org/data/v1/epss?cve=CVE-2021-3185
cvssv3.1 7.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-3185
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2021-3185
archlinux Medium https://security.archlinux.org/AVG-1484
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3185.json
https://api.first.org/data/v1/epss?cve=CVE-2021-3185
https://bugzilla.redhat.com/show_bug.cgi?id=1917192
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3185
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202208-31
AVG-1484 https://security.archlinux.org/AVG-1484
cpe:2.3:a:freedesktop:gst-plugins-bad:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:freedesktop:gst-plugins-bad:*:*:*:*:*:*:*:*
CVE-2021-3185 https://nvd.nist.gov/vuln/detail/CVE-2021-3185
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3185.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:L/UI:R/S:U/C:H/I:H/A:H 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:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3185
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:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3185
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 0.61872
EPSS Score 0.00433
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:15:05.995663+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2021-3185 37.0.0