CVE-2011-3232: Mozilla Firefox

High severity, CVSS 9.3. EPSS: 5% chance of exploitation in the next 30 days.

YARR, as used in Mozilla Firefox before 7.0, Thunderbird before 7.0, and SeaMonkey before 2.4, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted JavaScript.

Affected products

• Mozilla Firefox: up to and including 3.6.22; version 3.6 only; version 3.6.2 only; version 3.6.3 only; version 3.6.4 only; version 3.6.6 only; …
• Mozilla Seamonkey: up to and including 2.3.3; version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; …
• Mozilla Thunderbird: up to and including 6.0.2; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …

Published 2011-09-29. Last modified 2026-06-16.