CVE-2006-5463: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

Unspecified vulnerability in Mozilla Firefox before 1.5.0.8, Thunderbird before 1.5.0.8, and SeaMonkey before 1.0.6 allows remote attackers to execute arbitrary JavaScript bytecode via unspecified vectors involving modification of a Script object while it is executing.

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; version 1.5.0.5 only; …
• Mozilla Seamonkey: version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.5 only
• Mozilla Thunderbird: version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.5 only; version 1.0.6 only; version 1.0.7 only; …

Published 2006-11-08. Last modified 2026-06-16.