CVE-2012-3565: Opera Browser

Medium severity, CVSS 5.0. EPSS: 1.2% chance of exploitation in the next 30 days.

Opera before 12.00 Beta allows remote attackers to cause a denial of service (application crash) via crafted characters in domain names, as demonstrated by "IDNA2008 tests."

Affected products

• Opera Opera Browser: up to and including 11.65; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2012-06-14. Last modified 2026-06-16.