CVE-2026-43750 Memory corruption in macOS

Critical 9.8 Published 27 Jul 2026 Updated 29 Jul 2026

A buffer overflow in macOS allows an app to execute arbitrary code outside its sandbox or with elevated privileges.

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

What is CVE-2026-43750?

CVE-2026-43750 is a critical memory corruption vulnerability in Apple Macos, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, 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. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.

Weakness: CWE-120

Which versions are affected by CVE-2026-43750?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2026-43750?

No fix has been published for CVE-2026-43750 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-2026-43750 being exploited?

There is no known exploitation of CVE-2026-43750 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-g5rh-q4ff-2c5x.