CVE-2016-5272: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 2.3% chance of exploitation in the next 30 days.

The nsImageGeometryMixin class in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 does not properly perform a cast of an unspecified variable during handling of INPUT elements, which allows remote attackers to execute arbitrary code via a crafted web site.

Affected products

• Mozilla Firefox: up to and including 48.0.2; version 45.1.0 only; version 45.1.1 only; version 45.2.0 only; version 45.3.0 only

Published 2016-09-22. Last modified 2026-06-17.