Out-of-bounds write in macOS - CVE-2025-43338
Published: November 4, 2025
Vulnerability identifier: #VU118059
CSH Severity: High
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-2025-43338
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in ImageIO. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.
Affected software
macOS
Apple iOS
iPadOS
Apple iOS
iPadOS
How to mitigate CVE-2025-43338
Install updates from vendor's website.
macOS - addressed in versions 14.8.2 23J126, 14.8.4 23J319, 26.0 25A354
Apple iOS - update to 26.0 23A341
iPadOS - update to 26.0 23A341
Apple iOS - update to 26.0 23A341
iPadOS - update to 26.0 23A341