CVE-2026-28819 Memory corruption in iOS and iPadOS

Medium 5.4 Published Updated

An out-of-bounds write allows apps to execute arbitrary code with kernel privileges on Apple operating systems.

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-2026-28819?

CVE-2026-28819 is a medium-severity memory corruption vulnerability in Apple Ipados, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to execute arbitrary code with kernel privileges.

Weakness: CWE-787

Which versions are affected by CVE-2026-28819?

It affects 3 products.

Products include Apple Ipados, Apple Iphone Os, Apple Macos.

How do I fix CVE-2026-28819?

No fix has been published for CVE-2026-28819 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-2026-28819 being exploited?

There is no known exploitation of CVE-2026-28819 in the wild and no public exploit code.

All Apple Ipados vulnerabilities

Sources

Also known as GHSA-5xgr-7873-hpc7.

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