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CVE-2026-13773

10.0 critical SSVC exploitation: none Analyzed
NVD · CVE.org

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.string_to_object() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound IIOP SSRF to an attacker-chosen host; when chained with the IBM ORB's getUserException class-instantiation flaw (WAS-26), this SSRF escalates to remote code execution on the calling JVM.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 10.0 · ibmNVD modified 2026-10-25 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:ibm:websphere_extreme_scale:*:*:*:*:*:*:*:*

References 1