CVE-2025-43236 Memory corruption in macOS

Low 3.3 Published 2 Apr 2026 Updated 2 Apr 2026

An attacker can cause unexpected app termination via a type confusion issue in macOS, requiring a system update to mitigate.

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-2025-43236?

CVE-2025-43236 is a low-severity memory corruption vulnerability in Apple Macos, published on 2 Apr 2026. 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 type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. An attacker may be able to cause unexpected app termination.

Weakness: CWE-843

Which versions are affected by CVE-2025-43236?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2025-43236?

No fix has been published for CVE-2025-43236 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-2025-43236 being exploited?

There is no known exploitation of CVE-2025-43236 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-whc4-7qg7-64gg.