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Vulnerability details: VCID-2vy5-zebk-1bgk
Vulnerability ID VCID-2vy5-zebk-1bgk
Aliases CVE-2021-29961
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 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
epss 0.00316 https://api.first.org/data/v1/epss?cve=CVE-2021-29961
archlinux High https://security.archlinux.org/AVG-2018
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-23
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-29961
ASA-202106-3 https://security.archlinux.org/ASA-202106-3
AVG-2018 https://security.archlinux.org/AVG-2018
GLSA-202107-09 https://security.gentoo.org/glsa/202107-09
mfsa2021-23 https://www.mozilla.org/en-US/security/advisories/mfsa2021-23
USN-4978-1 https://usn.ubuntu.com/4978-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.54631
EPSS Score 0.00316
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:03:33.010725+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202107-09 38.0.0