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Fencer Vulns
medium 6.8

CVE-2025-11538 json

Keycloak-server: debug default bind address

published 2025-11-13 11 mo ago modified 2026-10-18 21 d ago also GHSA-j4vq-q93m-4683 , EUVD-2025-175330

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.keycloak:keycloak-quarkus-dist 26.4.4
  • Keycloak keycloak 26.4.4
  • Red Hat Red Hat build of Keycloak 26.4 26.4-3, 26.4.4-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-11538 updated cvss 6.8

keycloak-server: Debug default bind address

  • Red Hat build of Keycloak 26.4 rhbk/keycloak-rhel9 26.4-3, rhbk/keycloak-rhel9-operator 26.4-3, rhbk/keycloak-operator-bundle 26.4.4-1
    fixed: vendor fix RHSA-2025:21371
  • Red Hat build of Keycloak 26.4.4
    fixed: vendor fix RHSA-2025:21370

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
11 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
GitHub 3.1 6.8 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-quarkus-dist
<26.4.4
26.4.4

Affected products

  • Keycloak keycloak
  • Red Hat Red Hat build of Keycloak 26.4
  • Red Hat Red Hat build of Keycloak 26.4.4

Classification

Weakness
  • CWE-1327 Binding to an Unrestricted IP Address

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.