Protection mechanism failure in macOS - CVE-2026-43730

Vulnerability identifier: #VU143788

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:N/SC:L/SI:N/SA:N]

CVE-ID: CVE-2026-43730

CWE-ID: CWE-693

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local application to fingerprint the user.

The vulnerability exists due to insufficient implementation of security measures in AuthKit. A local application can fingerprint the user.

macOS
visionOS
tvOS
Apple iOS
iPadOS
watchOS

Install updates from vendor's website.

macOS - update to 26.6 25G72
visionOS - update to 26.6
tvOS - update to 26.6 23L773
Apple iOS - update to 26.6 23G71
iPadOS - update to 26.6 23G71
watchOS - update to 26.6 23U67

• https://support.apple.com/en-us/128067

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