Mozilla has acknowledged a vulnerability in Firefox, Thunderbird, and Seamonkey, which can be exploited by malicious people to potentially compromise a user's system.

For more information:
SA48026

Solution
Update to Firefox 10.0.2 or 3.6.27, Thunderbird 10.0.2 or 3.1.19, or SeaMonkey 2.7.2.
Changelog
Further details available to Secunia VIM customers

Original Advisory
Mozilla:
http://www.mozilla.org/security/announce/2012/mfsa2012-11.html
http://blog.mozilla.com/security/2012/02/17/mozilla-releases-to-address-cve-2011-3026/

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers