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7.5

IBM WebSphere Application Server Denies Service on IBM PowerVM Novalink

CVE-2026-9171 · published 3 months ago
Summary

IBM PowerVM Novalink users are at risk of a denial of service attack. This could happen if an attacker sends a specially crafted request to the server. To protect yourself, make sure to apply the latest security updates to IBM WebSphere Application Server.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm powervm novalink 2.2.02.2.12.2.1.1
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
cpe:2.3:a:ibm:powervm_novalink:2.2.0:*:*:*:*:*:*:*
Original advisory text
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 ...
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.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-400Uncontrolled Resource Consumption
Timeline
Published17 Jul 2026
Updated4 Nov 2026
First seen17 Jul 2026
Sources
CVE-2026-9171 · NVD
CVE-2026-9171 · MITRE
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