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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Keycloak keycloak
Default version status: unaffected
0 to < 26.4.4affected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4.4-1 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-3 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4
Default version status: affected
26.4-3 to < *unaffected
Red Hat Red Hat build of Keycloak 26.4.4
Default version status: unaffected
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/9e98f2bf961f68853cea6fbec58b512ed8be7ca9 ↗
- https://github.com/keycloak/keycloak/pull/43574 ↗