CVE•Published 2026-05-08•Modified 2026-05-12•0 articles on news•5 live references•NVD data

CVE-2025-66171Apache · Cloudstack

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

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

EPSS percentile

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Weaknesses (CWE)

CWE-359Exposure of Private Personal Information to an Unauthorized Actor

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 create new VMs using backups of any other user of the environment. 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

NVD MITRE Exploit-DB Sploitus VulnCheck

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-2025-66171

Hosts 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-2025-66171