CVE-2015-4477: Canonical Ubuntu Linux

High severity, CVSS 10.0. EPSS: 6.3% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the MediaStream playback feature in Mozilla Firefox before 40.0 allows remote attackers to execute arbitrary code via unspecified use of the Web Audio API.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only
• Mozilla Firefox: up to and including 39.0.3
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2015-08-16. Last modified 2026-06-17.