CVE-2009-3074: Mozilla Firefox

High severity, CVSS 10.0. EPSS: 5.5% chance of exploitation in the next 30 days.

Unspecified vulnerability in the JavaScript engine in Mozilla Firefox before 3.0.14 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Affected products

• Mozilla Firefox: up to and including 3.0.13; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …

Published 2009-09-10. Last modified 2026-06-16.