CVE-2025-43478 Use after free in macOS
An attacker can cause unexpected system termination via a use-after-free vulnerability in macOS, requiring a system update to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-43478?
CVE-2025-43478 is a medium-severity use after free vulnerability in Apple Macos, published on 4 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1. An app may be able to cause unexpected system termination.
Weakness: CWE-416
Which versions are affected by CVE-2025-43478?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2025-43478?
No fix has been published for CVE-2025-43478 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-43478 being exploited?
There is no known exploitation of CVE-2025-43478 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-2mw2-gj79-mjf4.