CVE-2026-28842 Memory corruption in macOS

High 7.5 Published 25 Mar 2026 Updated 2 Apr 2026

A buffer overflow in macOS can cause memory corruption and unexpected application termination, requiring a system update.

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-2026-28842?

CVE-2026-28842 is a high-severity memory corruption vulnerability in Apple Macos, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.

Weakness: CWE-122

Which versions are affected by CVE-2026-28842?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2026-28842?

No fix has been published for CVE-2026-28842 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-2026-28842 being exploited?

There is no known exploitation of CVE-2026-28842 in the wild and no public exploit code.

All Apple Macos vulnerabilities

Sources

Also known as GHSA-xvfm-vcfx-8599.