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How the CVE Works:
Enabling debug mode (--debug) in Keycloak insecurely binds the Java Debug Wire Protocol (JDWP) port to 0.0.0.0, exposing it on all network interfaces. This insecure default configuration allows any attacker with network access to the service’s port, typically on the local network segment, to connect a remote debugger. By attaching a debugger, an attacker can inject and execute arbitrary code within the Keycloak JVM process, leading to a full compromise of the application and its data. The vulnerability stems from a lack of interface restriction when debug mode is activated.
Platform: Keycloak
Version: <= 26.4.4
Vulnerability: Unrestricted JDWP Binding
Severity: Moderate
date: 2025-11-13
Prediction: Patch by 2025-11-27
What Undercode Say:
`netstat -tlnp | grep :8000`
`nmap -sS -p 8000 192.168.1.0/24`
`jdb -attach 192.168.1.100:8000`
How Exploit:
Attacher identifies open JDWP port.
Connects using debugger client.
Executes arbitrary Java code.
Protection from this CVE:
Avoid `–debug` flag.
Use `address=localhost` parameter.
Firewall block port 8000.
Impact:
Remote Code Execution.
Full JVM control.
Application data compromise.
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Sources:
Reported By: github.com
Extra Source Hub:
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