IBM AIX 7.2/7.3 & VIOS 4.1 DoS via uncontrolled dir record parsing
CVE-2026-18822 Published on August 20, 2026
Vulnerabilities in IBM AIX and PowerVM VIOS
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.
Vulnerability Analysis
CVE-2026-18822 is exploitable with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-18822 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-18822
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Affected Versions
IBM AIX:- Version 7.2 is affected.
- Version 7.3 is affected.
- Version 4.1 is affected.