CVE-2011-0257: Apple Quicktime

High severity, CVSS 9.3. EPSS: 60.1% chance of exploitation in the next 30 days.

Integer signedness error in Apple QuickTime before 7.7 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted PnSize opcode in a PICT file that triggers a stack-based buffer overflow.

Affected products

• Apple Quicktime: up to and including 7.6.9; version 7.0.0 only; version 7.0.1 only; version 7.0.2 only; version 7.0.3 only; version 7.0.4 only; …

Published 2011-08-15. Last modified 2026-06-16.