CVE-2014-1550: Mozilla Firefox

High severity, CVSS 10.0. EPSS: 4.9% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the MediaInputPort class in Mozilla Firefox before 31.0 and Thunderbird before 31.0 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by leveraging incorrect Web Audio control-message ordering.

Affected products

• Mozilla Firefox: up to and including 30.0
• Mozilla Thunderbird: up to and including 24.7; version 24.0 only; version 24.0.1 only; version 24.1 only; version 24.1.1 only; version 24.2 only; …

Published 2014-07-23. Last modified 2026-06-17.