CVE-2011-0206: Apple Mac OS X

High severity, CVSS 7.5. EPSS: 3.1% chance of exploitation in the next 30 days.

Buffer overflow in International Components for Unicode (ICU) in Apple Mac OS X before 10.6.8 allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via vectors involving uppercase strings.

Affected products

• Apple Mac OS X: version 10.6.0 only; version 10.6.1 only; version 10.6.2 only; version 10.6.3 only; version 10.6.4 only; version 10.6.5 only; …
• Apple Mac OS X Server: version 10.6.0 only; version 10.6.1 only; version 10.6.2 only; version 10.6.3 only; version 10.6.4 only; version 10.6.5 only; …

Published 2011-06-24. Last modified 2026-06-16.