CVE-2014-8634: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 3.9% chance of exploitation in the next 30 days.

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Affected products

• Mozilla Firefox: version 31.0 only; version 31.1.0 only; version 31.1.1 only; version 31.3.0 only; up to and including 34.0.5
• Mozilla Firefox ESR: version 31.2 only
• Mozilla Seamonkey: up to and including 2.31
• Mozilla Thunderbird: up to and including 31.3.0

Published 2015-01-14. Last modified 2026-06-17.