CVE-2015-7210: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 4.3% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.5 allows remote attackers to execute arbitrary code by triggering attempted use of a data channel that has been closed by a WebRTC function.

Affected products

• Fedoraproject Fedora: version 22 only; version 23 only
• Mozilla Firefox: up to and including 42.0; version 38.0 only; version 38.0.1 only; version 38.0.5 only; version 38.1.0 only; version 38.1.1 only; …
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2015-12-16. Last modified 2026-06-17.