Deserialization Vulnerability in IBM WebSphere Application Server
CVE-2026-11711

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Websphere Application Server
Vendor
CVE Published:
18 September 2026

What is CVE-2026-11711?

IBM WebSphere Application Server versions 8.5 and 9.0 are susceptible to a deserialization vulnerability in the Name Service component. This flaw can potentially allow attackers to manipulate deserialized data, leading to unauthorized access or execution of malicious code. It is crucial for users to apply the latest patches and updates provided by IBM to mitigate the risks associated with this vulnerability. For detailed guidance on securing your system, refer to the vendor advisory.

Affected Version(s)

WebSphere Application Server 9.0

WebSphere Application Server 8.5

References

https://www.ibm.com/support/pages/node/7286610
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.