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CVE-2025-12838— MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability

Quick assessment

Affected
MSP360 Free 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 Free Backup是MSP360公司的一个跨平台数据备份软件。 MSP360 Free Backup存在后置链接漏洞，该漏洞源于恢复功能存在链接跟随问题，可能导致本地权限提升。

AI Predicted 8.4 Difficulty: Moderate EPSS 0.18% · P7
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I. Basic Information for CVE-2025-12838

Vulnerability Information
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Vulnerability Title
MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSP360 Free Backup. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. User interaction on the part of an administrator is needed additionally. The specific flaw exists within the restore functionality. By creating a junction, an attacker can abuse the service to create arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-27245.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
MSP360 Free Backup 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MSP360 Free Backup是MSP360公司的一个跨平台数据备份软件。 MSP360 Free Backup存在后置链接漏洞，该漏洞源于恢复功能存在链接跟随问题，可能导致本地权限提升。
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 Free Backup 8.1.0.620 -

II. Public POCs for CVE-2025-12838

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III. Intelligence Information for CVE-2025-12838

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IV. Related Vulnerabilities

Same vendor: MSP360
Same weakness: CWE-59

V. Comments for CVE-2025-12838

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