medium6.8
CVE-2025-11538
Keycloak has debug default bind address
Impact
A vulnerability exists in Keycloak's server distribution where enabling debug mode (`--debug`) 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. Red Hat evaluates this as a Moderate impact vulnerability due to the requirement of running debug mode and untrusted network. Also, for Red Hat Single Sign-On, this must as well be bound to 0.0.0.0 address, which is not recommended in production scenarios.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-quarkus-dist | < 26.4.4 | 26.4.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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
- https://github.com/advisories/GHSA-j4vq-q93m-4683
- https://github.com/keycloak/keycloak/security/advisories/GHSA-j4vq-q93m-4683
- https://nvd.nist.gov/vuln/detail/CVE-2025-11538