CVE-2015-5913: Apple Mac OS X

Medium severity, CVSS 6.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Heimdal, as used in Apple OS X before 10.11, allows remote attackers to conduct replay attacks against the SMB server via packet data that represents a Kerberos authenticated request.

Affected products

• Apple Mac OS X: up to and including 10.10.5

Published 2015-10-09. Last modified 2026-06-17.