Improper input validation in macOS - CVE-2026-20602
Published: February 11, 2026
Vulnerability identifier: #VU122704
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20602
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation in WindowServer. A local application can cause a denial-of-service.
Affected software
macOS
How to mitigate CVE-2026-20602
Install update from vendor's website.
macOS - addressed in versions 26.3 25D125, 14.8.4 23J319, 15.7.4 24G517