Improper access control in macOS - CVE-2026-43700

Vulnerability identifier: #VU137087

CSH Severity: Low

CVSS v4: 2.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-43700

CWE-ID: CWE-284

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in WebKit when rendering content. A local user can trigger processing of crafted content to disclose sensitive information.

macOS
visionOS
tvOS
Apple iOS
iPadOS
watchOS
Apple Safari

Install update from vendor's website.

macOS - update to 26.5.2 25F84
visionOS - update to 26.6
tvOS - update to 26.6 23L773
Apple iOS - addressed in versions 18.7.10 22H374, 26.5.2 23F84
iPadOS - addressed in versions 18.7.10 22H374, 26.5.2 23F84
Apple Safari - update to 26.5.2
watchOS - update to 26.6 23U67

• https://support.apple.com/en-us/127595

• Multiple vulnerabilities in Apple macOS Tahoe
• 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 Safari
• Multiple vulnerabilities in iOS 18 and iPadOS 18