Quick answers
- Is CVE-2026-18716 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18716 being exploited in the wild.
- How severe is CVE-2026-18716?
- High severity, with a CVSS score of 7.9, 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-2026-18716?
- 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-2026-18716 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-18716?
- 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 out-of-bounds read in IBM AIX 7.2, 7.3 and PowerVM VIOS 4.1. It requires remote network access and prior authentication. An attacker can exploit this to leak sensitive information from process memory or trigger a denial of service condition. IBM has released security updates as part of cumulative maintenance packages; customers should apply Service Packs or Fix Packs promptly. The exact vulnerable component is not detailed in available documentation.
Affected products
- IBM AIX 7.2, 7.3
- IBM PowerVM VIOS 4.1
Timeline
- 2026-08-20: disclosed