CVE-2026-18670 Vulnerabilities in IBM AIX and PowerVM VIOS

High 8.2 Published 20 Aug 2026 Updated 21 Aug 2026

A remote attacker can cause a denial of service and potentially disclose sensitive information via an integer underflow in IBM AIX and PowerVM VIOS.

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-2026-18670?

CVE-2026-18670 is a high-severity 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 cause a denial of service and potentially disclose sensitive information due to an integer underflow.

Weakness: CWE-191, CWE-190

Which versions are affected by CVE-2026-18670?

It affects 2 products.

Products include Ibm Aix, Ibm Vios.

How do I fix CVE-2026-18670?

No fix has been published for CVE-2026-18670 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-18670 being exploited?

There is no known exploitation of CVE-2026-18670 in the wild and no public exploit code.

All Ibm Aix vulnerabilities

Sources

Also known as GHSA-cjp4-x5rh-9pqj.