CVE-2020-9922: Apple Mac OS X

Medium severity, CVSS 6.5. EPSS: 1.5% chance of exploitation in the next 30 days.

A logic issue was addressed with improved state management. This issue is fixed in macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra. Processing a maliciously crafted email may lead to writing arbitrary files.

Affected products

• Apple Mac OS X: before 10.15.6 (fixed in 10.15.6)

Published 2020-12-08. Last modified 2026-06-17.