CVE-2012-1942: Mozilla Firefox

High severity, CVSS 7.2. EPSS: 0.3% chance of exploitation in the next 30 days.

The Mozilla Updater and Windows Updater Service in Mozilla Firefox 12.0, Thunderbird 12.0, and SeaMonkey 2.9 on Windows allow local users to gain privileges by loading a DLL file in a privileged context.

Affected products

• Mozilla Firefox: version 12.0 only
• Mozilla Seamonkey: version 2.9 only
• Mozilla Thunderbird: version 12.0 only

Published 2012-06-05. Last modified 2026-06-16.