CVE-2025-11538 Keycloak-server: debug default bind address
Enabling debug mode binds JDWP to all interfaces, allowing network attackers to achieve remote code execution in Keycloak.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-11538?
CVE-2025-11538 is a medium-severity vulnerability in Red Hat build of Keycloak 26.4, published on 13 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-1327
Which versions are affected by CVE-2025-11538?
2 open source packages ship an affected version, including org.keycloak:keycloak-quarkus-dist.
| Package | Affected | Fixed in |
|---|---|---|
org.keycloak:keycloak-quarkus-dist Maven | All versions | 26.4.4 |
org.keycloak:keycloak-quarkus-dist Maven | All versions | 26.4.4 |
How do I fix CVE-2025-11538?
Upgrade org.keycloak:keycloak-quarkus-dist to 26.4.4 or later.
Is CVE-2025-11538 being exploited?
There is no known exploitation of CVE-2025-11538 in the wild and no public exploit code.
Sources
Also known as GHSA-j4vq-q93m-4683, MINI-49pv-8q97-2chg, MINI-7fc6-jqc2-gp69.