CVE•Published 2026-05-08•Modified 2026-05-12•1 article on news•5 live references•NVD data
CVE-2025-66172Apache · Cloudstack
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
—
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.
Timeline
Published 2026-05-08
Modified 2026-05-12
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-66172Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Apache Cloudstack"All exposed Apache Cloudstack instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Cloudstack"HTTP body or banner mentions "Cloudstack" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2025-66172Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-66172Censys host search filtered to this CVE id.
grep.app
CVE-2025-66172Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-66172GitHub code search for direct mentions.
Google dork
"CVE-2025-66172" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-66172 on GitHub.