CVE-2026-9171Vulnerabilities in IBM WebSphere Application affects IBM PowerVM Novalink.
- 7.5HighCVSS base score
- 0.55%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By ibm
- 57 days later
· 57 days later
Published
- 13 days later
· 13 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ibmCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.55% · top 53% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 2.2.02.2.12.2.1.1
- affected 2.3.02.3.0.12.3.12.3.2
What to do
Solution: IBM strongly recommends addressing the vulnerability now by upgrading based on the table below. ProductVersionRemediationPowerVM Novalink 2.2.1.1 Update to pvm-novalink-2.2.1.1-260708 https://public.dhe.ibm.com/systems/virtualization/Novalink/readme/NovaLink_2.2.1.1_readme.html or Update to pvm-novalink-2.3.3-260714 https://public.dhe.ibm.com/systems/virtualization/Novalink/readme/NovaLink_2.3.3_readme.html PowerVM Novalink 2.3.3 Update to pvm-novalink-2.3.3-260714 https://public.dhe.ibm.com/systems/virtualization/Novalink/readme/NovaLink_2.3.3_readme.html
References
References1
- https://www.ibm.com/support/pages/node/7280226 (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45250 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-9171)Record last updated .