CVE-2011-4684: Opera Browser

High severity, CVSS 10.0. EPSS: 5.7% chance of exploitation in the next 30 days.

Opera before 11.60 does not properly handle certificate revocation, which has unspecified impact and remote attack vectors related to "corner cases."

Affected products

• Opera Opera Browser: up to and including 11.60; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2011-12-07. Last modified 2026-06-16.