CVE-2014-1584: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 2.1% chance of exploitation in the next 30 days.

The Public Key Pinning (PKP) implementation in Mozilla Firefox before 33.0 skips pinning checks upon an unspecified issuer-verification error, which makes it easier for remote attackers to bypass an intended pinning configuration and spoof a web site via a crafted certificate that leads to presentation of the Untrusted Connection dialog to the user.

Affected products

• Mozilla Firefox: up to and including 32.0; version 30.0 only; version 31.0 only; version 31.1.0 only

Published 2014-10-15. Last modified 2026-06-17.