Improper input validation in macOS - CVE-2026-20627

Vulnerability identifier: #VU122679

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-20627

CWE-ID: CWE-20

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to insufficient input validation in CoreServices. A local application can access sensitive user data.

macOS
visionOS
watchOS
iPadOS
Apple iOS

Install update from vendor's website.

macOS - addressed in versions 26.3 25D125, 14.8.4 23J319
visionOS - update to 26.3
watchOS - update to 26.3 23S620
iPadOS - update to 26.3 23D127
Apple iOS - update to 26.3 23D127

• https://support.apple.com/en-us/126348

• Multiple vulnerabilities in Apple macOS Tahoe
• Multiple vulnerabilities in Apple macOS Sonoma
• Multiple vulnerabilities in Apple visionOS
• Multiple vulnerabilities in Apple watchOS
• Multiple vulnerabilities in Apple iOS 26 and iPadOS 26