Quick answers
- Is CVE-2026-17163 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17163 being exploited in the wild.
- How severe is CVE-2026-17163?
- High severity, with a CVSS score of 7.5, 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-2026-17163?
- 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-2026-17163 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-17163?
- 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 exists in IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1, where improper validation of an array size field allows a remote attacker to trigger a denial of service condition. The vulnerability is remotely exploitable with no authentication required (CVSS attack vector: network). An attacker can craft malicious input that bypasses array size validation, causing the system to crash or become unresponsive. IBM has released security updates as part of cumulative maintenance packages and service/fix packs to remediate this issue.
Affected products
- IBM AIX 7.2, 7.3
- IBM PowerVM VIOS 4.1
Timeline
- 2026-08-20: disclosed