IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70807 and APAR PH70616. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature.
For IBM WebSphere Application Server Liberty 19.0.0.7 - 26.0.0.5 using the sipServlet-1.1 feature:
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70807
--OR--
· Apply Fix Pack 26.0.0.6 or later (targeted availability 2Q2026).
For IBM WebSphere Application Server traditional:
For V9.0.0.0 through 9.0.5.27:
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70616
--OR--
· Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026).
For V8.5.0.0 through 8.5.5.29:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves PH70616
--OR--
· Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026).
Additional interim fixes may be available and linked off the interim fix download page.
"}]}],"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T15:24:44.817386Z","id":"CVE-2026-4410","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","type":"CWE","lang":"en","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T15:25:09.833Z"}}]}}}