CVE-2025-11419: fallo de gravedad alta en keycloak
Keycloak: keycloak tls client-initiated renegotiation denial of service
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.7%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
keycloakRed Hat · Red Hat build of Keycloak 26.0Red Hat · Red Hat build of Keycloak 26.0.16Red Hat · Red Hat build of Keycloak 26.2Red Hat · Red Hat build of Keycloak 26.2.10CVEs relacionadas — keycloak
En el mismo producto, de las más peligrosas a las menos.
CVE-2024-3656HIGHKeycloak: unguarded admin rest api endpoints allows low privilege users to use administrative functionalitiesEPSS 3.3%CVE-2024-8698HIGHKeycloak-saml-core: improper verification of saml responses leading to privilege escalation in keycloakEPSS 2.0%CVE-2024-1132HIGHKeycloak: path transversal in redirection validationEPSS 1.6%CVE-2024-10270MEDIUMOrg.keycloak:keycloak-services: keycloak denial of serviceEPSS 1.2%CVE-2023-6484MEDIUMKeycloak: log injection during webauthn authentication or registrationEPSS 1.0%CVE-2024-11734MEDIUMOrg.keycloak:keycloak-quarkus-server: denial of service in keycloak server via security headersEPSS 0.9%
Referencias
https://access.redhat.com/errata/RHSA-2025:18254https://access.redhat.com/errata/RHSA-2025:18255https://access.redhat.com/errata/RHSA-2025:18889https://access.redhat.com/errata/RHSA-2025:18890https://access.redhat.com/security/cve/CVE-2025-11419https://bugzilla.redhat.com/show_bug.cgi?id=2402142https://github.com/keycloak/keycloak/discussions/25209https://github.com/keycloak/keycloak/issues/43020