CVE-2026-16926 Vulnerabilities in IBM AIX and PowerVM VIOS

Critical 9.1 Published 20 Aug 2026 Updated 25 Aug 2026

Remote attackers can overwrite arbitrary files on IBM AIX and PowerVM VIOS systems due to improper input neutralization.

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-2026-16926?

CVE-2026-16926 is a critical path traversal vulnerability in Ibm Aix, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, 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 attacker to overwrite arbitrary files due to improper neutralization of special elements in input.

Weakness: CWE-73

Which versions are affected by CVE-2026-16926?

It affects 2 products.

Products include Ibm Aix, Ibm Vios.

How do I fix CVE-2026-16926?

No fix has been published for CVE-2026-16926 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-16926 being exploited?

There is no known exploitation of CVE-2026-16926 in the wild and no public exploit code.

All Ibm Aix vulnerabilities

Sources

Also known as GHSA-83fg-6ff4-5q69.