CVE-2025-11538
Keycloak has debug default bind address
Description
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.
How to fix CVE-2025-11538
To remediate CVE-2025-11538, upgrade the affected package to a fixed version below.
- —upgrade to 26.4.4 or later
Is CVE-2025-11538 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 26.4.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.8 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |