Is CVE-2025-66172 actively exploited?

No active exploitation of CVE-2025-66172 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-66172 be exploited remotely?

Yes. CVE-2025-66172 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-66172?

CVE-2025-66172 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2025-66172

CWE-359Published: May 8, 2026· Updated: May 12, 2026

8.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.5th

Official 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.

NVD Source

Technical Analysis

CVE-2025-66172 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.