What is CVE-2026-9171?

CVE-2026-9171 is a high-severity vulnerability in IBM Powervm Novalink, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-17.

How severe is CVE-2026-9171?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in IBM Powervm Novalink

CVE-2026-9171

IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.005 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ibm Powervm Novalink — versions 2.2.02.2.12.2.1.1, 2.3.02.3.0.12.3.12.3.2
Ibm Powervm_novalink — versions 2.2.0, 2.2.1, 2.2.1.1

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-9171?: CVE-2026-9171 is a high-severity vulnerability in IBM Powervm Novalink, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-17.
How severe is CVE-2026-9171?: High severity. CVSS v3 base score is 7.5 out of 10.