CVE-2013-5182: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 1.4% chance of exploitation in the next 30 days.

Mail in Apple Mac OS X before 10.9 allows remote attackers to spoof the existence of a cryptographic signature for an e-mail message by using the multipart/signed content type within an unsigned message.

Affected products

• Apple Mac OS X: up to and including 10.8.5; version 10.8.0 only; version 10.8.1 only; version 10.8.2 only; version 10.8.3 only; version 10.8.4 only; …

Published 2013-10-24. Last modified 2026-06-16.