CVE-2025-11419

EUVD-2025-36356
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
redhatCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 20%
Common Weakness Enumeration
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