CVE-2008-0591: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 3.8% chance of exploitation in the next 30 days.

Mozilla Firefox before 2.0.0.12 and Thunderbird before 2.0.0.12 does not properly manage a delay timer used in confirmation dialogs, which might allow remote attackers to trick users into confirming an unsafe action, such as remote file execution, by using a timer to change the window focus, aka the "dialog refocus bug" or "ffclick2".

Affected products

• Mozilla Firefox: up to and including 2.0.0.11
• Mozilla Thunderbird: up to and including 2.0.0.11

Published 2008-02-09. Last modified 2026-06-16.