CVE-2025-66171 - CVE House
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Status published Unknown CVE-2025-66171

Apache CloudStack: Any user can create a new VM from backups they should not have access to

Vulnerability Description

The CloudStack Backup plugin has an improper access logic in versions 4.21.0.0 and 4.22.0.0. Anyone with authenticated user-account access in CloudStack 4.21.0.0+ environments, where this plugin is enabled and have access to specific APIs can create new VMs using backups of any other user of the environment. Backup plugin users using CloudStack 4.21.0.0+ are recommended to upgrade to CloudStack version 4.22.0.1, which fixes this issue.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Fabricio Duarte <fabricio.duarte.jr@gmail.com>
  • Gabriel Ortiga Fernandes <gabriel.ortiga@hotmail.com>
  • Gabriel Pordeus Santos <gabrielpordeus@gmail.com>

References

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Affected Vendor

Apache Software Foundation

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Affected Software

Apache CloudStack
Vulnerable Versions:
4.21.0.0

Timeline

Official Publish: May 8th, 2026
Last Modified: May 9th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

CWE-359

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.