CVE-2023-27935 Memory corruption in macOS

High 8.8 Published 8 May 2023 Updated 4 Nov 2025

A remote attacker can trigger a buffer overflow in macOS, leading to arbitrary code execution or application termination.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-27935?

CVE-2023-27935 is a high-severity memory corruption vulnerability in Apple Macos, published on 8 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The issue was addressed with improved bounds checks. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4, macOS Big Sur 11.7.5. A remote user may be able to cause unexpected app termination or arbitrary code execution.

Weakness: CWE-120

Which versions are affected by CVE-2023-27935?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2023-27935?

No fix has been published for CVE-2023-27935 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-2023-27935 being exploited?

There is no known exploitation of CVE-2023-27935 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-4j9h-4jxx-94f3.