CVE-2025-11538

Keycloak-server: debug default bind address

Published Nov 13, 2025 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-7m9g-pmxf-m9m8 Keycloak allows Binding to an Unrestricted IP Address
Github GHSA Github GHSA GHSA-j4vq-q93m-4683 Keycloak has debug default bind address
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.4::el9
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Keycloak-server: debug default bind address
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-1327
CPEs cpe:/a:redhat:build_keycloak:
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Dec 19, 2025, 9:26 PM
Reserved
Oct 9, 2025, 1:57 AM
Status
Deferred
Published
Nov 13, 2025, 5:15 PM
Modified
Oct 18, 2026, 8:10 PM
Severity
Moderate
Public date
Nov 13, 2025, 3:00 PM