CVE-2009-2577: Opera Browser

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Opera 9.52 and earlier allows remote attackers to cause a denial of service (CPU and memory consumption, and application hang) via a long Unicode string argument to the write method, a related issue to CVE-2009-2479.

Affected products

• Opera Opera Browser: up to and including 9.52; version 7.0 only; version 7.23 only; version 7.53 only; version 7.54 only; version 7.60 only; …

Published 2009-07-22. Last modified 2026-06-16.