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CVE-2025-5474— 2BrightSparks SyncBackFree Link Following Local Privilege Escalation Vulnerability

Quick assessment

Affected
2BrightSparks SyncBackFree
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.

2BrightSparks SyncBackFree是新加坡2BrightSparks公司的一款文件备份软件。 2BrightSparks SyncBackFree存在后置链接漏洞，该漏洞源于Mirror功能存在链接跟随问题，可能导致本地权限提升。

AI Predicted 7.8 Difficulty: Easy EPSS 0.27% · P19
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I. Basic Information for CVE-2025-5474

Vulnerability Information
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Vulnerability Title
2BrightSparks SyncBackFree Link Following Local Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
2BrightSparks SyncBackFree Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of 2BrightSparks SyncBackFree. 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 also required. The specific flaw exists within the Mirror functionality. By creating a junction, an attacker can abuse the service to delete arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26962.
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
2BrightSparks SyncBackFree 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
2BrightSparks SyncBackFree是新加坡2BrightSparks公司的一款文件备份软件。 2BrightSparks SyncBackFree存在后置链接漏洞，该漏洞源于Mirror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
2BrightSparks SyncBackFree 11.3.87.0 -

II. Public POCs for CVE-2025-5474

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III. Intelligence Information for CVE-2025-5474

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Vendor Advisories for CVE-2025-5474 (1)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2025-5474

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