Use after free in macOS - CVE-2025-43478
Published: November 4, 2025
Vulnerability identifier: #VU117983
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-43478
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in ASP TCP. A local application can cause unexpected system termination.
Affected software
macOS
How to mitigate CVE-2025-43478
Install update from vendor's website.
macOS - addressed in versions 26.1 25B78, 14.8.2 23J126, 15.7.2 24G325