CVE-2011-2669: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Mozilla Firefox prior to 3.6 has a DoS vulnerability due to an issue in the validation of certificates.

Affected products

• Mozilla Firefox: before 3.6 (fixed in 3.6)

Published 2020-01-21. Last modified 2026-06-16.