Memory corruption in macOS - CVE-2026-43661
Published: May 12, 2026
Vulnerability identifier: #VU131027
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-2026-43661
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
macOS
Apple iOS
iPadOS
tvOS
watchOS
Apple iOS
iPadOS
tvOS
watchOS
How to mitigate CVE-2026-43661
Install update from vendor's website.
macOS - update to 26.5 25F71
Apple iOS - update to 26.5 23F77
iPadOS - update to 26.5 23F77
tvOS - update to 26.5 23L471
watchOS - update to 26.5 23T570
Apple iOS - update to 26.5 23F77
iPadOS - update to 26.5 23F77
tvOS - update to 26.5 23L471
watchOS - update to 26.5 23T570