CVE-2026-18822 Vulnerabilities in IBM AIX and PowerVM VIOS
A local attacker can cause a denial of service in IBM AIX and PowerVM VIOS by triggering uncontrolled resource consumption during directory record parsing.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18822?
CVE-2026-18822 is a medium-severity denial of service 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 local attacker to cause a denial of service due to uncontrolled resource consumption when parsing directory records.
Weakness: CWE-400
Which versions are affected by CVE-2026-18822?
It affects 2 products.
How do I fix CVE-2026-18822?
No fix has been published for CVE-2026-18822 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-18822 being exploited?
There is no known exploitation of CVE-2026-18822 in the wild and no public exploit code.
Other vulnerabilities in Ibm Aix
Sources
Also known as GHSA-j5cx-55qm-78rc.