Buffer overflow in macOS - CVE-2025-43520

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Main Vulnerability Database Vulnerabilities #VU119948

Buffer overflow in macOS - CVE-2025-43520

Published: December 13, 2025 / Updated: March 20, 2026


Vulnerability identifier: #VU119948
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-43520
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary error within the OS kernel. A local application can trigger memory corruption and execute arbitrary code on the target system.


Affected software

macOS
Apple iOS
iPadOS
tvOS
visionOS
watchOS

How to mitigate CVE-2025-43520

Install updates from vendor's website.

macOS - addressed in versions 15.7.2 24G325, 14.8.2 23J126, 26.1 25B78
Apple iOS - addressed in versions 18.7.2 22H124, 26.1 23B85
iPadOS - addressed in versions 18.7.2 22H124, 26.1 23B85
tvOS - update to 26.1 23J580
visionOS - update to 26.1
watchOS - update to 26.1 23S37

External References

Related Security Bulletins