CVE-2007-0776: Mozilla Firefox

High severity, CVSS 9.3. EPSS: 6.8% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the _cairo_pen_init function in Mozilla Firefox 2.x before 2.0.0.2, Thunderbird before 1.5.0.10, and SeaMonkey before 1.0.8 allows remote attackers to execute arbitrary code via a large stroke-width attribute in the clipPath element in an SVG file.

Affected products

• Mozilla Firefox: up to and including 2.0.0.1
• Mozilla Seamonkey: up to and including 1.0.7
• Mozilla Thunderbird: up to and including 1.5.0.9

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