Vulnerability Description
A vulnerability exists in Keycloak's server distribution where enabling debug mode (--debug <port>) insecurely defaults to binding the Java Debug Wire Protocol (JDWP) port to all network interfaces (0.0.0.0). This exposes the debug port to the local network, allowing an attacker on the same network segment to attach a remote debugger and achieve remote code execution within the Keycloak Java virtual machine.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2025:21370
- https://access.redhat.com/errata/RHSA-2025:21371
- https://access.redhat.com/security/cve/CVE-2025-11538
- https://bugzilla.redhat.com/show_bug.cgi?id=2402622
- https://github.com/keycloak/keycloak/commit/9e98f2bf961f68853cea6fbec58b512ed8be
- https://github.com/keycloak/keycloak/pull/43574
FAQ
What is CVE-2025-11538?
CVE-2025-11538 is a vulnerability with a CVSS score of 6.8 (MEDIUM). A vulnerability exists in Keycloak's server distribution where enabling debug mode (--debug <port>) insecurely defaults to binding the Java Debug Wire Protocol (JDWP) port to all network interfaces (0...
How severe is CVE-2025-11538?
CVE-2025-11538 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-11538?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.