CVE-2011-4687: Opera Browser

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

Opera before 11.60 allows remote attackers to cause a denial of service (CPU and memory consumption) via unspecified content on a web page, as demonstrated by a page under the cisco.com home page.

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.