Buffer overflow in macOS - CVE-2025-43539

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Main Vulnerability Database Vulnerabilities #VU119919

Buffer overflow in macOS - CVE-2025-43539

Published: December 13, 2025


Vulnerability identifier: #VU119919
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-2025-43539
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing files in AppleJPEG. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

macOS
visionOS
tvOS
Apple iOS
iPadOS
watchOS

How to mitigate CVE-2025-43539

Install updates from vendor's website.

macOS - addressed in versions 26.2 25C56, 14.8.3 23J220, 15.7.3 24G419
visionOS - update to 26.2
tvOS - update to 26.2 23K54
Apple iOS - addressed in versions 18.7.3 22H217, 26.2 23C55
iPadOS - addressed in versions 18.7.3 22H217, 26.2 23C55
watchOS - update to 26.2 23S303

External References

Related Security Bulletins