CVE-2025-5474 2BrightSparks SyncBackFree Link Following Local Privilege Escalation Vulnerability
Local attackers can escalate privileges to SYSTEM by exploiting a link following flaw in the Mirror functionality, requiring low-privileged code execution and admin interaction.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-5474?
CVE-2025-5474 is a high-severity vulnerability in 2BrightSparks SyncBackFree, published on 6 Jun 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-59
Which versions are affected by CVE-2025-5474?
It affects 1 product.
Products include 2brightsparks Syncbackfree.
How do I fix CVE-2025-5474?
No fix has been published for CVE-2025-5474 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-5474 being exploited?
There is no known exploitation of CVE-2025-5474 in the wild and no public exploit code.
Sources
Also known as GHSA-2gpq-3p2h-4848.