CVE-2025-43239 Memory corruption in macOS
An out-of-bounds access vulnerability in macOS allows attackers to cause unexpected application termination via a maliciously crafted file.
- 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-2025-43239?
CVE-2025-43239 is a high-severity memory corruption vulnerability in Apple Macos, published on 29 Jul 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
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. Processing a maliciously crafted file may lead to unexpected app termination.
Weakness: CWE-125
Which versions are affected by CVE-2025-43239?
It affects 1 product.
Products include Apple Macos.
How do I fix CVE-2025-43239?
No fix has been published for CVE-2025-43239 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-2025-43239 being exploited?
There is no known exploitation of CVE-2025-43239 in the wild and no public exploit code.
Other vulnerabilities in Apple Macos
Sources
Also known as GHSA-f6ch-wgf2-cc32.