CVE-2007-4841: Mozilla Firefox

High severity, CVSS 9.3. EPSS: 2.6% chance of exploitation in the next 30 days.

Mozilla Firefox before 2.0.0.8, Thunderbird before 2.0.0.8, and SeaMonkey before 1.1.5 allows remote attackers to execute arbitrary commands via a (1) mailto, (2) nntp, (3) news, or (4) snews URI with invalid "%" encoding, related to improper file type handling on Windows XP with Internet Explorer 7 installed, a variant of CVE-2007-3845.

Affected products

• Mozilla Firefox: up to and including 2.0.0.8
• Mozilla Seamonkey: up to and including 1.1.5
• Mozilla Thunderbird: up to and including 2.0.0.8

Published 2007-09-12. Last modified 2026-06-16.