CVE-2025-11538Hinoki check available

Unauthenticated code execution via unrestricted JDWP binding

Published Nov 13, 2025 · Updated Nov 13, 2025

Unrestricted JDWP binding in Red Hat build of Keycloak 26.4 allows remote attackers to execute code in the server JVM. When debug mode receives a bare port, kc.sh and kc.bat prepend 0.0.0.0, causing JDWP to listen on every interface rather than localhost. Debug mode must be enabled, and the attacker must reach the exposed port; attaching a debugger grants code execution within the Keycloak JVM.

CVSS severity6.8
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Unrestricted JDWP binding in Red Hat build of Keycloak 26.4 allows remote attackers to execute code in the server JVM. When debug mode receives a bare port, kc.sh and kc.bat prepend 0.0.0.0, causing JDWP to listen on every interface rather than localhost. Debug mode must be enabled, and the attacker must reach the exposed port; attaching a debugger grants code execution within the Keycloak JVM.

The record

CVE
CVE-2025-11538
Published
Nov 13, 2025
Updated
Nov 13, 2025
Vendor
389 Directory Server
Product
Red Hat build of Keycloak
Classifications
CWE-1327, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat build of KeycloakAffected versions are unavailable in this record.

Published CVSS scores

6.8Red Hat, Inc.CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1327Binding to an Unrestricted IP Address
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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