Vulnerability in Apache Cloudstack
CVE-2025-66172
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…
EPSS: 0.000 (3.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Apache Cloudstack
- Apache Software Foundation Cloudstack — versions 4.21.0.0
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-66172?
- CVE-2025-66172 is a high-severity vulnerability in Apache Cloudstack, classified under Exposure of Private Personal Information to an Unauthorized Actor. CVSS score: 8.1/10. Published 2026-05-08.
- How severe is CVE-2025-66172?
- High severity. CVSS v3 base score is 8.1 out of 10.