Link following in .NET for Linux - CVE-2025-55247
Published: October 15, 2025
Vulnerability identifier: #VU117273
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2025-55247
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
.NET for Linux
.NET for Linux
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an insecure link following issue in .NET. 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.
How to mitigate CVE-2025-55247
Install updates from vendor's website.