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CVE Vulnerability Details :
CVE-2025-66171
PUBLISHED
More InfoOfficial Page
Assigner-apache
Assigner Org ID-f0158376-9dc2-43b6-827c-5f631a4d8d09
View Known Exploited Vulnerability (KEV) details
Published At-08 May, 2026 | 12:11
Updated At-09 May, 2026 | 06:42
Rejected At-
▼CVE Numbering Authority (CNA)
Apache CloudStack: Any user can create a new VM from backups they should not have access to

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.

Affected Products
Vendor
The Apache Software FoundationApache Software Foundation
Product
Apache CloudStack
Default Status
unaffected
Versions
Affected
  • From 4.21.0.0 through 4.22.0.0 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-359CWE-359 Exposure of Private Personal Information to an Unauthorized Actor
Type: CWE
CWE ID: CWE-359
Description: CWE-359 Exposure of Private Personal Information to an Unauthorized Actor
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Textual description of severity
text:
important
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Fabricio Duarte <fabricio.duarte.jr@gmail.com>
reporter
Gabriel Ortiga Fernandes <gabriel.ortiga@hotmail.com>
reporter
Gabriel Pordeus Santos <gabrielpordeus@gmail.com>
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm
vendor-advisory
Hyperlink: https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2026/05/09/2
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2026/05/09/2
Resource: N/A
Details not found