CVE-2026-18716 Vulnerabilities in IBM AIX and PowerVM VIOS

High 7.9 Published 20 Aug 2026 Updated 21 Aug 2026

Remote authenticated attackers can obtain sensitive information or cause denial of service via an out-of-bounds read in IBM AIX and PowerVM VIOS.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-18716?

CVE-2026-18716 is a high-severity vulnerability in Ibm Aix, published on 20 Aug 2026. It can only be exploited from the same machine or local 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 or cause a denial of service due to an out-of-bounds read.

Weakness: CWE-125

Which versions are affected by CVE-2026-18716?

It affects 2 products.

Products include Ibm Aix, Ibm Vios.

How do I fix CVE-2026-18716?

No fix has been published for CVE-2026-18716 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-18716 being exploited?

There is no known exploitation of CVE-2026-18716 in the wild and no public exploit code.

All Ibm Aix vulnerabilities

Sources

Also known as GHSA-5w7c-9hff-vv9j.