CVE-2009-2471: Mozilla Firefox

High severity, CVSS 10.0. EPSS: 3.7% chance of exploitation in the next 30 days.

The setTimeout function in Mozilla Firefox before 3.0.12 does not properly preserve object wrapping, which allows remote attackers to execute arbitrary JavaScript with chrome privileges via a crafted call, related to XPCNativeWrapper.

Affected products

• Mozilla Firefox: up to and including 3.0.11; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …

Published 2009-07-22. Last modified 2026-06-16.