Memory corruption in macOS - CVE-2026-28990

Vulnerability identifier: #VU131029

CSH Severity: Medium

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-28990

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a boundary error in ImageIO. A remote attacker can trick the victim into opening a specially crafted file and escalate privileges on the system.

macOS
Apple iOS
iPadOS
tvOS
visionOS
watchOS

Install update from vendor's website.

macOS - addressed in versions 26.5 25F71, 14.8.7 23J520, 15.7.7 24G720
Apple iOS - update to 26.5 23F77
iPadOS - update to 26.5 23F77
tvOS - update to 26.5 23L471
visionOS - update to 26.5
watchOS - update to 26.5 23T570

• https://support.apple.com/en-us/127115

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