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.
CVE-2025-11538
This medium-severity CVE scores 6.8 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.8
- EG Score
- 6.8(medium)
- EPSS
- 34.8%
- KEV
- Not listed
Published
November 13, 2025
Last Modified
April 15, 2026
References (6)
- secalert@redhathttps://access.redhat.com/errata/RHSA-2025:21370
- secalert@redhathttps://access.redhat.com/errata/RHSA-2025:21371
- secalert@redhathttps://access.redhat.com/security/cve/CVE-2025-11538
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2402622
- secalert@redhathttps://github.com/keycloak/keycloak/commit/9e98f2bf961f68853cea6fbec58b512ed8be7ca9
- secalert@redhathttps://github.com/keycloak/keycloak/pull/43574
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | rhbk/keycloak-rhel9-operator:26.4-3 | 2025-11-13 | redhat |
| redhat | rhbk/keycloak-rhel9 | 2025-11-13 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.keycloak:keycloak-quarkus-dist | 17.0.0 ... 26.4.3 (77 versions) | 26.4.4 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 10× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:26 UTCEPSS rescore
- 2026-07-10 01:45 UTCOSV refresh
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- 2026-06-22 14:25 UTCEPSS rescore
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- 2026-06-21 12:01 UTCOSV refresh
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- 2026-06-02 05:39 UTCOSV refresh
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- 2026-05-23 00:09 UTCEG score recompute
- 2026-05-22 21:16 UTCEPSS rescore
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- 2026-05-21 04:42 UTCVendor advisory
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Frequently asked(5)
What is CVE-2025-11538?
When was CVE-2025-11538 disclosed?
Is CVE-2025-11538 actively exploited?
What is the CVSS score of CVE-2025-11538?
How do I remediate CVE-2025-11538?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-11538
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