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Vulnerabilities

Vulnerability · CVE-2025-26521

When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to

Published Jun 10, 2025 · catalog updated Feb 26, 2026 · Apache Software Foundation Apache CloudStack

Check this week

CVE-2025-26521 is not in CISA KEV. FIRST estimates a 66.00% chance of exploitation in the next 30 days. Check whether you run Apache Software Foundation Apache CloudStack.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
66.00%
Remediation
Version ranges on file
Affected products
vendor Apache Software Foundation Apache CloudStack 4.17.0.0 <4.19.3.0

When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to create the secret config in the CKS-based Kubernetes cluster. A member of the project who can access the CKS-based Kubernetes cluster, can also access the API key and secret key of the 'kubeadmin' user of the CKS cluster's creator's account. An attacker who's a member of the project can exploit this to impersonate and perform privileged actions that can result in complete compromise of the confidentiality, integrity

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Apache Software Foundation Apache CloudStack 4.17.0.0 <4.19.3.04.17.0.0 <4.19.3.0

How to fix CVE-2025-26521

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-26521 is not in CISA KEV. FIRST estimates a 66.00% chance of exploitation in the next 30 days. Check whether you run Apache Software Foundation Apache CloudStack.

Which versions are affected?

Compare what you have installed with Apache Software Foundation Apache CloudStack 4.17.0.0 <4.19.3.0 4.17.0.0 <4.19.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 66.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Kubernetes security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2025 · EUVD

    Detected

    When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to create the secret config in the CKS-based Kubernetes cluster. A member of the project who can access the CKS-based Kubernetes cluster, can also access the API key and secret key of the 'kubeadmin' user of the CKS cluste

  2. Feb 26, 2026 · EUVD

    Updated

    When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to create the secret config in the CKS-based Kubernetes cluster. A member of the project who can access the CKS-based Kubernetes cluster, can also access the API key and secret key of the 'kubeadmin' user of the CKS cluste

Sources

  • CVE.orgVulnerability recordCVE-2025-26521

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-18065

    When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to create the secret config in the CKS-based Kubernetes cluster. A member of the project who can acces

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.