CVE-2026-43681 Memory corruption in macOS

High 7.1 Published 27 Jul 2026 Updated 28 Jul 2026

A local attacker can read kernel memory due to a buffer overflow 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-2026-43681?

CVE-2026-43681 is a high-severity memory corruption vulnerability in Apple Macos, published on 27 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A local user may be able to read kernel memory.

Weakness: CWE-120

Which versions are affected by CVE-2026-43681?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2026-43681?

No fix has been published for CVE-2026-43681 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-2026-43681 being exploited?

There is no known exploitation of CVE-2026-43681 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-8gv4-rrq2-vm98.