VULNERABILITY INTELLIGENCE

CVE-2021-1840

CVSS score7.8 HIGH

EPSS probability0.34%

CISA KEVNot currently listed

Published2021-09-08

Last modified2026-06-17

Description

A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. A local attacker may be able to elevate their privileges.