Vulnerability in Mozilla Firefox

CVE-2015-2741

Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, and Thunderbird before 38.1 do not enforce key pinning upon encountering an X.509 certificate problem that generates a user dialog, which allows user-assisted man-in-the-middle attackers to bypass intended access restrictions by triggering a (1) expired certificate or (2) mismatched hostname for a domain with pinning enabled.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.013 (67.7th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References