CVE-2025-11538: Keycloak

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

• Keycloak Keycloak: before 26.4.4 (fixed in 26.4.4)
• Red Hat Red Hat Build Of Keycloak 26.4: before 26.4.4-1 (fixed in 26.4.4-1); before 26.4-3 (fixed in 26.4-3)
• Red Hat Red Hat Build Of Keycloak 26.4.4

Published 2025-11-13. Last modified 2026-06-17.