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CVE-2025-43596— MSP360 Backup (for Windows) insecure filesystem permissions

Quick assessment

Affected
MSP360 Backup
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MSP360 Backup是MSP360公司的一款跨平台的数据备份与恢复解决方案，支持本地存储、云存储混合备份，提供企业级数据保护功能。 MSP360 Backup 8.0版本存在安全漏洞，该漏洞源于文件系统权限不当，可能导致低权限用户执行SYSTEM级别命令。

CVSS 7.8 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1546.001 · Change Default File Association
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I. Basic Information for CVE-2025-43596

Vulnerability Information
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Vulnerability Title
MSP360 Backup (for Windows) insecure filesystem permissions
Source: CVE Program / CVE List V5
Vulnerability Description
An insecure file system permissions vulnerability in MSP360 Backup 8.0 allows a low privileged user to execute commands with SYSTEM level privileges using a specially crafted file with an arbitrary file backup target. Upgrade to MSP360 Backup 8.1.1.19 (released on 2025-05-15).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
MSP360 Backup 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MSP360 Backup是MSP360公司的一款跨平台的数据备份与恢复解决方案，支持本地存储、云存储混合备份，提供企业级数据保护功能。 MSP360 Backup 8.0版本存在安全漏洞，该漏洞源于文件系统权限不当，可能导致低权限用户执行SYSTEM级别命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MSP360 Backup 8.0 -

II. Public POCs for CVE-2025-43596

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III. Intelligence Information for CVE-2025-43596

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Vendor Pages for CVE-2025-43596 (2)

IV. Related Vulnerabilities

Same product: Backup
Same vendor: MSP360
Same weakness: CWE-276

V. Comments for CVE-2025-43596

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