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Vulnerability details: VCID-4ex8-mxvh-8kah
Vulnerability ID VCID-4ex8-mxvh-8kah
Aliases CVE-2011-2991
Summary Multiple vulnerabilities have been found in Mozilla Firefox, Thunderbird, SeaMonkey, NSS, GNU IceCat, and XULRunner, some of which may allow execution of arbitrary code or local privilege escalation.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
epss 0.07005 https://api.first.org/data/v1/epss?cve=CVE-2011-2991
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2011-29
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2011-31
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2011-33
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2011-2991
CVE-2011-2991 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2991
GLSA-201301-01 https://security.gentoo.org/glsa/201301-01
mfsa2011-29 https://www.mozilla.org/en-US/security/advisories/mfsa2011-29
mfsa2011-31 https://www.mozilla.org/en-US/security/advisories/mfsa2011-31
mfsa2011-33 https://www.mozilla.org/en-US/security/advisories/mfsa2011-33
USN-1192-1 https://usn.ubuntu.com/1192-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.91423
EPSS Score 0.07005
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:08:11.773073+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201301-01 38.0.0