7.5

CVE-2025-11419

Keycloak: keycloak tls client-initiated renegotiation denial of service

Keycloak TLS Client-Initiated Renegotiation Denial of Service

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.
Mögliche Gegenmaßnahme
Keycloak Server: Install latest version
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Collection URLhttps://github.com/keycloak/keycloak/
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Paket keycloak
Default Statusunaffected
Version 0
Version < 26.0.16
Status affected
Version 26.1.0
Version < 26.1.*
Status unknown
Version 26.2.0
Version < 26.2.10
Status affected
Version 26.3.0
Version < 26.3.*
Status unknown
Version 26.4.0
Version < 26.4.1
Status affected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.0
Default Statusaffected
Version 26.0.16-2
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.0
Default Statusaffected
Version 26.0-20
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.0
Default Statusaffected
Version 26.0-21
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.0.16
Default Statusunaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.2
Default Statusaffected
Version 26.2.10-2
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.2
Default Statusaffected
Version 26.2-11
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.2
Default Statusaffected
Version 26.2-11
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.2.10
Default Statusunaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Weitere Schwachstelleninformationen
SystemKeycloak
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Produkt Keycloak Server
Version >= 0.0.0, < 26.0.16
Version >= 26.2.0, < 26.2.10
Version >= 26.4.0, < 26.4.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.08% 0.228
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.