CVE-2026-16825 Vulnerabilities in IBM AIX and PowerVM VIOS

Medium 4.2 Published 19 Aug 2026 Updated 21 Aug 2026

A remote authenticated attacker can exploit an out-of-bounds write in IBM AIX and PowerVM VIOS to disclose sensitive information or cause a denial of service.

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-2026-16825?

CVE-2026-16825 is a medium-severity memory corruption vulnerability in Ibm Aix, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.

Weakness: CWE-787

Which versions are affected by CVE-2026-16825?

It affects 2 products.

Products include Ibm Aix, Ibm Vios.

How do I fix CVE-2026-16825?

No fix has been published for CVE-2026-16825 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-2026-16825 being exploited?

There is no known exploitation of CVE-2026-16825 in the wild and no public exploit code.

All Ibm Aix vulnerabilities

Sources

Also known as GHSA-3fcr-249g-2cg3.