CVE-2025-66172

HighCVSS 8.1/10Last modified Oct 7, 2026

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 restore a volume from any other user's backups and attach the volume to their own VMs.

Backup plugin users using CloudStack 4.21.0.0+ are recommended to upgrade to CloudStack version 4.22.0.1, which fixes this issue.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-359

Affected software

No affected versions have been published.

Timeline

Published: May 8, 2026
Last modified: Oct 7, 2026
NVD status: Analyzed

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