Link following in Free Backup - CVE-2025-12838
Published: December 5, 2025
Vulnerability identifier: #VU119217
CSH Severity: Low
CVSS v4: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-12838
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an insecure link following issue within the restore functionality. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application, leading to arbitrary code execution with elevated privileges..
Affected software
Free Backup
How to mitigate CVE-2025-12838
Install updates from vendor's website.
Free Backup - update to 8.1.4