CVE-2025-5474: syncbackfree (CVSS 7.3)

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.

Is your site exposed to CVE-2025-5474?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.3

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-59 CWE-59

Affected Products

Vendor	Product	Versions
2brightsparks	syncbackfree	All

References

Other References

https://www.zerodayinitiative.com/advisories/ZDI-25-322/

Frequently Asked Questions

What is CVE-2025-5474? +

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. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-5474? +

CVE-2025-5474 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-5474? +

CVE-2025-5474 affects products from 2brightsparks, specifically: syncbackfree. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-5474? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-30371

Metabase is a business intelligence and embedded analytics tool. Versions prior to v0.52.16.4, v1.52.16.4, v0.53.8, and v1.53.8 are vulnerable to …

CVE-2025-4211

Improper Link Resolution Before File Access ('Link Following') vulnerability in QFileSystemEngine in the Qt corelib module on Windows which potentially …

CVE-2025-2102

Improper Link Resolution Before File Access ('Link Following') vulnerability in HYPR Passwordless on Windows allows Privilege Escalation.This issue affects HYPR …

CVE-2025-52936

Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.

CVE-2025-53109

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior …

CVE-2025-7012

An issue in Cato Networks' CatoClient for Linux, before version 5.5, allows a local attacker to escalate privileges to root …

CVE-2025-5474