CVE-2009-0157: Apple Mac OS X

Medium severity, CVSS 6.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Heap-based buffer overflow in CFNetwork in Apple Mac OS X 10.5 before 10.5.7 allows remote web servers to execute arbitrary code or cause a denial of service (application crash) via long HTTP headers.

Affected products

• Apple Mac OS X: version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only; version 10.5.5 only; …
• Apple Mac OS X Server: version 10.5.0 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only; version 10.5.5 only; …

Published 2009-05-13. Last modified 2026-06-16.