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NVD Vulnerability Details :
CVE-2025-66171
Undergoing Analysis
More InfoOfficial Page
Source-security@apache.org
View Known Exploited Vulnerability (KEV) details
Published At-08 May, 2026 | 13:16
Updated At-09 May, 2026 | 07:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-359Secondarysecurity@apache.org
CWE ID: CWE-359
Type: Secondary
Source: security@apache.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xmsecurity@apache.org
N/A
http://www.openwall.com/lists/oss-security/2026/05/09/2af854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm
Source: security@apache.org
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/05/09/2
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Change History
0Changes found
Details not found