Improper input validation in macOS - CVE-2026-113961

Vulnerability identifier: #VU164339

CSH Severity: Medium

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

CVE-ID: CVE-2026-113961

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to potentially trigger unintended application behavior.

The vulnerability exists due to improper input validation in the Messages component of Apple macOS when processing externally supplied input. A remote attacker can submit malformed input to potentially trigger unintended application behavior.

macOS
iPadOS
Apple iOS
visionOS
watchOS

Install update from vendor's website.

macOS - addressed in versions 27.2.1 26B131, 15.8.3 24H241, 26.7.3 25G342
iPadOS - addressed in versions 26.7.3 23H131, 27.2.1 24B156, 27.2.1 24B8156
Apple iOS - addressed in versions 26.7.3 23H131, 27.2.1 24B156, 27.2.1 24B91034
visionOS - update to 27.2.1
watchOS - update to 27.2.1 24S132

• https://support.apple.com/en-us/149718

• Multiple vulnerabilities in Apple macOS Golden Gate
• Multiple vulnerabilities in Apple macOS Tahoe
• Multiple vulnerabilities in Apple macOS Sequoia
• Multiple vulnerabilities in Apple iOS 27 and iPadOS 27
• Multiple vulnerabilities in Apple iOS 26 and iPadOS 26
• Multiple vulnerabilities in Apple watchOS 27
• Multiple vulnerabilities in Apple visionOS