Quick answers
- Is CVE-2026-18824 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18824 being exploited in the wild.
- How severe is CVE-2026-18824?
- High severity, with a CVSS score of 8.4, published 20 August 2026.
- Which products and versions are affected?
- IBM Aix 7.2, 7.3; IBM PowerVM VIOS 4.1.
- Is there a fix for CVE-2026-18824?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-18824 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-18824?
- Check whether you run IBM Aix or IBM PowerVM VIOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an OS command injection flaw (CWE-78 class, improper neutralization of special elements in OS commands) in IBM AIX 7.2, 7.3 and PowerVM VIOS 4.1. It requires authentication to exploit but allows a remote attacker to execute arbitrary commands on the affected system. The NIM (Network Installation Management) component appears to be the affected vector. Successful exploitation grants the attacker command execution at the privilege level of the vulnerable process, potentially leading to full system compromise. IBM has released security updates through Service Packs and Fix Packs.
Affected products
- IBM AIX 7.2, 7.3
- IBM PowerVM VIOS 4.1
Timeline
- 2026-08-20: disclosed: Published on NVD
- 2026-08-21: advisory: IBM security bulletin updated with installation instructions