CVE-2007-0008: Mozilla Firefox

Medium severity, CVSS 6.8. EPSS: 4.4% chance of exploitation in the next 30 days.

Integer underflow in the SSLv2 support in Mozilla Network Security Services (NSS) before 3.11.5, as used by Firefox before 1.5.0.10 and 2.x before 2.0.0.2, SeaMonkey before 1.0.8, Thunderbird before 1.5.0.10, and certain Sun Java System server products before 20070611, allows remote attackers to execute arbitrary code via a crafted SSLv2 server message containing a public key that is too short to encrypt the "Master Secret", which results in a heap-based overflow.

Affected products

• Mozilla Firefox: up to and including 1.5.0.9; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …
• Mozilla Network Security Services: version 3.11.2 only; version 3.11.3 only; version 3.11.4 only
• Mozilla Seamonkey: up to and including 1.0.7; 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 1.5.0.9; version 0.1 only; version 0.2 only; version 0.3 only; version 0.4 only; version 0.5 only; …

Published 2007-02-26. Last modified 2026-06-16.