PT-2026-38914 · Unknown · Cloudstack

Published 2026-05-08 · Updated 2026-05-09 · CVE-2025-66171

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions CloudStack versions 4.21.0.0 through 4.22.0.0

Description The CloudStack Backup plugin contains improper access logic. Authenticated users in environments where this plugin is enabled can leverage specific APIs to create new virtual machines using backups belonging to any other user in the environment.

Recommendations Upgrade to CloudStack version 4.22.0.1.

Fix

Weakness Enumeration

CWE-359

Related Identifiers

CVE-2025-66171

Affected Products

Cloudstack

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-66171 · Security Note
• https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm · Vendor Advisory
• https://twitter.com/CVEnew/status/2053174678177358144 · Twitter Post
• https://t.me/cveNotify/162857 · Telegram Post
• http://openwall.com/lists/oss-security/2026/05/09/2 · Note
• https://twitter.com/VulmonFeeds/status/2052765745285652694 · Twitter Post