Vulnerability Description
A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests to exhaust server CPU resources, making the service unavailable.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2025:18254
- https://access.redhat.com/errata/RHSA-2025:18255
- https://access.redhat.com/errata/RHSA-2025:18889
- https://access.redhat.com/errata/RHSA-2025:18890
- https://access.redhat.com/security/cve/CVE-2025-11419
- https://bugzilla.redhat.com/show_bug.cgi?id=2402142
- https://github.com/keycloak/keycloak/discussions/25209
- https://github.com/keycloak/keycloak/issues/43020
FAQ
What is CVE-2025-11419?
CVE-2025-11419 is a vulnerability with a CVSS score of 7.5 (HIGH). A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests t...
How severe is CVE-2025-11419?
CVE-2025-11419 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-11419?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.