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CVE-2025-66172— Apache CloudStack: Any user can attach a volume in their VMs from backups they should not have access to

Quick assessment

Affected
Apache Software Foundation Apache CloudStack
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache CloudStack是美国阿帕奇（Apache）基金会的一套基础架构即服务（IaaS）云计算平台。该平台主要用于部署和管理大型虚拟机网络。 Apache CloudStack 4.21.0.0版本和4.22.0.0版本存在安全漏洞，该漏洞源于访问逻辑不当，可能导致任何经过身份验证的用户在启用插件的环境中通过特定API从其他用户的备份恢复卷并将其附加到自己的虚拟机。

AI Predicted 7.5 Difficulty: Easy EPSS 0.51% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache CloudStack 4.21.0.0≤ 4.22.0.0 affected
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I. Basic Information for CVE-2025-66172

Vulnerability Information
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Vulnerability Title
Apache CloudStack: Any user can attach a volume in their VMs from backups they should not have access to
Source: CVE Program / CVE List V5
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 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
侵犯隐私
Source: CVE Program / CVE List V5
Vulnerability Title
Apache CloudStack 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache CloudStack是美国阿帕奇（Apache）基金会的一套基础架构即服务（IaaS）云计算平台。该平台主要用于部署和管理大型虚拟机网络。 Apache CloudStack 4.21.0.0版本和4.22.0.0版本存在安全漏洞，该漏洞源于访问逻辑不当，可能导致任何经过身份验证的用户在启用插件的环境中通过特定API从其他用户的备份恢复卷并将其附加到自己的虚拟机。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache CloudStack 4.21.0.0 ~ 4.22.0.0 -

II. Public POCs for CVE-2025-66172

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III. Intelligence Information for CVE-2025-66172

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Mailing List Discussions for CVE-2025-66172 (1)

Same Patch Batch · Apache Software Foundation · 2026-05-08 · 8 CVEs total

CVE-2025-66467 8.0 HIGH Apache CloudStack: MinIO policy remains intact on bucket deletion
CVE-2025-69233 6.5 MEDIUM Apache CloudStack: Domain/account resources limits not honored
CVE-2025-66170 Apache CloudStack: Any user can list backups that they should not have access to
CVE-2025-66171 Apache CloudStack: Any user can create a new VM from backups they should not have access t
CVE-2026-25077 Apache CloudStack: Unauthenticated Command Injection in Direct Download Templates
CVE-2026-25199 Apache CloudStack: Proxmox Extension Allows Unauthorized Cross-Tenant Instance Access
CVE-2026-39816 Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService

IV. Related Vulnerabilities

Same product: Apache CloudStack
Same vendor: Apache Software Foundation
Same weakness: CWE-359

V. Comments for CVE-2025-66172

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