CVE-2012-0456: Mozilla Firefox

Medium severity, CVSS 5.0. EPSS: 2.7% chance of exploitation in the next 30 days.

The SVG Filters implementation in Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird before 3.1.20 and 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 might allow remote attackers to obtain sensitive information from process memory via vectors that trigger an out-of-bounds read.

Affected products

• Mozilla Firefox: up to and including 3.6.27; from 4.0, up to and including 10.0; version 10.0 only; version 10.0.1 only; version 10.0.2 only
• Mozilla Seamonkey: affected versions not specified; version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; …
• Mozilla Thunderbird: from 1.0, up to and including 3.1.19; after 5.0, up to and including 10.0
• Mozilla Thunderbird ESR: version 10.0 only; version 10.0.1 only; version 10.0.2 only

Published 2012-03-14. Last modified 2026-06-16.