Quick answers
- Is CVE-2026-9171 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9171 being exploited in the wild.
- How severe is CVE-2026-9171?
- High severity, with a CVSS score of 7.5, published 17 July 2026.
- Which products and versions are affected?
- IBM PowerVM NovaLink 2.2.0, 2.2.1, 2.2.1.1, 2.3.0, 2.3.0.1, 2.3.1, 2.3.2.
- Is there a fix for CVE-2026-9171?
- 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-2026-9171 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9171?
- Check whether you run IBM PowerVM NovaLink 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
IBM PowerVM Novalink is affected by a denial of service vulnerability (CWE-400) originating from its use of IBM WebSphere Application Server Liberty. The flaw allows a remote, unauthenticated attacker to send a specially crafted HTTP request that triggers uncontrolled resource consumption. Specifically, the exploit causes the server to exhaust available memory resources, leading to a denial of service condition. The vulnerability is reachable over the network without user interaction. IBM has released patches for affected versions 2.2.x and 2.3.x to mitigate this issue.
Affected products
- IBM PowerVM Novalink 2.2.0, 2.2.1, 2.2.1.1, 2.3.0, 2.3.0.1, 2.3.1, 2.3.2
Timeline
- 2026-07-16: advisory: Initial publication by IBM
- 2026-07-17: disclosed: NVD publication date