CVE-2006-3805: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 6.6% chance of exploitation in the next 30 days.

The Javascript engine in Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 might allow remote attackers to execute arbitrary code via vectors involving garbage collection that causes deletion of a temporary object that is still being used.

Affected products

• Mozilla Firefox: version 1.5 only; version 1.5.0.1 only; version 1.5.0.2 only; version 1.5.0.3 only; version 1.5.0.4 only
• Mozilla Seamonkey: version 1.0 only; version 1.0.1 only; version 1.0.2 only
• Mozilla Thunderbird: version 1.5 only; version 1.5.0.2 only; version 1.5.0.4 only

Published 2006-07-27. Last modified 2026-06-16.