CVE-2026-13773
CRITICAL
INFO
Priority: 0.61
BB Relevance:
81/100
Published: 2026-06-30
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| ibm | websphere_extreme_scale | 8.6.1.0 – 8.6.1.6 |
References & Advisories (1)
Vendor Advisory