CVE-2017-13906: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan, macOS High Sierra 10.13. A malicious application may be able to elevate privileges.

Affected products

• Apple Mac OS X: from 10.11, before 10.11.6 (fixed in 10.11.6); from 10.12, up to and including 10.12.5; version 10.11.6 only

Published 2021-12-23. Last modified 2026-06-17.