CVE-2010-0167: Mozilla Firefox

High severity, CVSS 9.3. EPSS: 10.5% chance of exploitation in the next 30 days.

The browser engine in Mozilla Firefox 3.0.x before 3.0.18, 3.5.x before 3.5.8, and 3.6.x before 3.6.2; Thunderbird before 3.0.2; and SeaMonkey before 2.0.3 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via vectors related to (1) layout/generic/nsBlockFrame.cpp and (2) the _evaluate function in modules/plugin/base/src/nsNPAPIPlugin.cpp.

Affected products

• Mozilla Firefox: version 3.0 only; version 3.0.1 only; version 3.0.10 only; version 3.0.11 only; version 3.0.12 only; version 3.0.13 only; …
• Mozilla Seamonkey: up to and including 2.0.2; version 1.1 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; …
• Mozilla Thunderbird: up to and including 3.0.1; 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; …

Published 2010-03-25. Last modified 2026-06-16.