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Vulnerability details: VCID-8v6f-5kdt-9qam
Vulnerability ID VCID-8v6f-5kdt-9qam
Aliases CVE-2021-29974
Summary Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-29974
cvssv3.1 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
archlinux High https://security.archlinux.org/AVG-2148
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-28
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-29974
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ASA-202107-20 https://security.archlinux.org/ASA-202107-20
AVG-2148 https://security.archlinux.org/AVG-2148
GLSA-202202-03 https://security.gentoo.org/glsa/202202-03
mfsa2021-28 https://www.mozilla.org/en-US/security/advisories/mfsa2021-28
USN-5011-1 https://usn.ubuntu.com/5011-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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
Exploit Prediction Scoring System (EPSS)
Percentile 0.5998
EPSS Score 0.00391
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:00:50.228084+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202202-03 38.0.0