Threat landscape
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Red Hat OpenShift Pipelines Operator (Fulcio): Schwachstelle ermöglicht Denial of Service

WID-SEC-2026-0199 · first 23.01.2026 · updated 06.08.2026 · CVSS 7,5

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What it is about

Red Hat OpenShift ist eine "Platform as a Service" (PaaS) Lösung zur Bereitstellung von Applikationen in der Cloud. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat OpenShift Pipelines Operator ausnutzen, um einen Denial of Service Angriff durchzuführen.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

  • einen Denial of Service Angriff durchzuführen

Am I affected?

Affected according to the BSI:

  • Red Hat Enterprise Linux
  • Red Hat OpenShift Pipelines Operator <1.21.0

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

What helps?

Update to at least:

  • Red Hat OpenShift Pipelines Operator 1.21.0

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

and 2 more sources in the original advisory

CVE: CVE-2025-66506

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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