Threat landscape
high

Red Hat Build of Keycloak: Mehrere Schwachstellen

WID-SEC-2026-0347 · first 10.02.2026 · updated 12.05.2026 · CVSS 8,1

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What it is about

Keycloak ermöglicht Single Sign-On mit Identity and Access Management für moderne Anwendungen und Dienste. Ein Angreifer kann mehrere Schwachstellen in Red Hat Build of Keycloak ausnutzen, um die Authentifizierung zu umgehen, erweiterte Berechtigungen zu erlangen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen, beliebigen Code auszuführen oder Daten zu manipulieren.

Under what conditions?

The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.

What can happen in the worst case

An attacker could use the vulnerability to

  • die Authentifizierung zu umgehen
  • erweiterte Berechtigungen zu erlangen
  • vertrauliche Informationen offenzulegen
  • einen Denial-of-Service-Zustand zu verursachen
  • beliebigen Code auszuführen oder Daten zu manipulieren

Am I affected?

Affected according to the BSI:

  • Oracle Linux
  • Red Hat Enterprise Linux Keycloak <26.2.13
  • Red Hat Enterprise Linux Keycloak Operator <26.2.13
  • Dell ECS 3.8.1.0-3.8.1.7

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • Red Hat Enterprise Linux Keycloak 26.2.13
  • Red Hat Enterprise Linux Keycloak Operator 26.2.13

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

CVE: CVE-2025-14778, CVE-2026-1529, CVE-2025-64720, CVE-2025-65018, CVE-2026-21925, CVE-2026-21933, CVE-2026-21945

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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