Remote Code Execution Risk in Keycloak Server Due to Insecure Debug Mode Configuration
CVE-2025-11538

6.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak 26.4
Red Hat Build Of Keycloak 26.4.4
Vendor
CVE Published:
13 November 2025

What is CVE-2025-11538?

A flaw in Keycloak's server distribution allows enabling debug mode to insecurely bind the Java Debug Wire Protocol (JDWP) port to all network interfaces (0.0.0.0). This misconfiguration exposes the debug port to anyone on the same local network segment, providing potential attackers the ability to attach a remote debugger. Consequently, this could lead to unauthorized remote code execution within the Keycloak Java virtual machine, posing serious security risks for organizations utilizing the affected versions.

Affected Version(s)

Red Hat build of Keycloak 26.4 26.4.4-1

Red Hat build of Keycloak 26.4 26.4-3

Red Hat build of Keycloak 26.4 26.4-3

References

https://access.redhat.com/errata/RHSA-2025:21370
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:21371
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-11538
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Steven Hawkins (Red Hat).
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