CVE-2019-8839: Apple Mac OS X

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra. An attacker in a privileged position may be able to perform a denial of service attack.

Affected products

• Apple Mac OS X: before 10.15.2 (fixed in 10.15.2)

Published 2020-10-27. Last modified 2026-06-17.