CVE-2025-43312 Memory corruption in macOS
A buffer overflow in macOS allows an app to cause unexpected system termination, requiring an OS upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-43312?
CVE-2025-43312 is a medium-severity memory corruption vulnerability in Apple Macos, published on 15 Sep 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26. An app may be able to cause unexpected system termination.
Weakness: CWE-120
Which versions are affected by CVE-2025-43312?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2025-43312?
No fix has been published for CVE-2025-43312 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-43312 being exploited?
There is no known exploitation of CVE-2025-43312 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-5pph-9cv8-8c6x.