CVE-2011-3447: Apple Mac OS X

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

CFNetwork in Apple Mac OS X 10.7.x before 10.7.3 does not properly construct request headers during parsing of URLs, which allows remote attackers to obtain sensitive information via a malformed URL.

Affected products

• Apple Mac OS X: version 10.7.0 only; version 10.7.1 only; version 10.7.2 only
• Apple Mac OS X Server: version 10.7.0 only; version 10.7.1 only; version 10.7.2 only

Published 2012-02-02. Last modified 2026-06-16.