Keycloak-server: debug default bind address
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Keycloak | keycloak | before 26.4.4 | 26.4.4 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4.4-1 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4-3 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4-3 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4.4 | — | — | Not affected | CNA |
| — | org.keycloak:keycloak-quarkus-dist (Maven) | before 26.4.4 | 26.4.4 | Patch available | GHSA-j4vq-q93m-4683 |
- keycloak VendorKeycloak Affected before 26.4.4 Fixed in 26.4.4 Patch available CNA
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4.4-1 Patch available CNA
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-3 Patch available CNA
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-3 Patch available CNA
- Red Hat build of Keycloak 26.4.4 VendorRed Hat Affected — Fixed in — Not affected CNA
- org.keycloak:keycloak-quarkus-dist (Maven) Vendor— Affected before 26.4.4 Fixed in 26.4.4 Patch available GHSA-j4vq-q93m-4683
Remediation
- Fix · CNA keycloak (Keycloak) Fixed in 26.4.4
- Fix · GHSA-j4vq-q93m-4683 org.keycloak:keycloak-quarkus-dist (Maven) Fixed in 26.4.4 Advisory →
Red Hat 2 advisories
- RHSA-2025:21371 Released 2025-11-13 · Red Hat rating ModerateRed Hat build of Keycloak 26.4.4 Images Security Update
- Red Hat build of Keycloak 26.4 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
- RHSA-2025:21370 Released 2025-11-13 · Red Hat rating ModerateRed Hat build of Keycloak 26.4.4 Security Update
- Red Hat build of Keycloak 26.4.4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat build of Keycloak 26.4 | Fixed | RHSA-2025:21371 |
| Red Hat build of Keycloak 26.4.4 | Fixed | RHSA-2025:21370 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-11538
- 2026-10-03 Alias added: GHSA-j4vq-q93m-4683
References
Other 6
- https://access.redhat.com/security/cve/CVE-2025-11538
- RHBZ#2402622
- https://github.com/keycloak/keycloak/commit/9e98f2bf961f68853cea6fbec58b512ed8be7ca9
- https://github.com/keycloak/keycloak/pull/43574
- https://github.com/keycloak/keycloak/security/advisories/GHSA-j4vq-q93m-4683
- https://github.com/keycloak/keycloak
More Keycloak vulnerabilities
- TI-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
- TI-2017-05120 It was found that the Keycloak Node.js adapter 2.5 - 3.0 did not handle invalid tokens… CVSS 3.0CRITICAL 9.8
- TI-2017-08952 Weak password recovery in Red Hat Keycloak CVSS 3.0HIGH 8.8
- TI-2014-03024 The org.keycloak.services.resources.SocialResource.callback method in JBoss KeyCloak… CVSS 3.0HIGH 8.8
- TI-2026-01295 Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users CVSS 3.1HIGH 8.1
- TI-2017-08950 Insufficient session expiration in Red Hat keycloak CVSS 3.0HIGH 7.5
Sources
- CVE-2025-11538 · CVE Program
- CVE-2025-11538 · NVD
- FIRST EPSS
- GHSA-j4vq-q93m-4683 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-11538 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences