Memory corruption in macOS - CVE-2026-43807

Vulnerability identifier: #VU143799

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-43807

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to memory corruption in MobileAccessoryUpdater when handling input. A local attacker can trigger the vulnerable condition to cause a denial of service.

macOS
visionOS
tvOS
iPadOS
Apple iOS
watchOS

Install update from vendor's website.

macOS - addressed in versions 15.7.8 24G824, 14.8.8 23J620, 26.5.2 25F84
visionOS - update to 26.6
tvOS - update to 26.6 23L773
iPadOS - update to 26.5.2 23F84
Apple iOS - update to 26.5.2 23F84
watchOS - update to 26.6 23U67

• https://support.apple.com/en-us/128071

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