Incorrect default permissions in .NET for Linux - CVE-2026-26131

 

Incorrect default permissions in .NET for Linux - CVE-2026-26131

Published: March 10, 2026


Vulnerability identifier: #VU123780
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-26131
CWE-ID: CWE-276
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
.NET for Linux

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions in .NET. A local user can gain elevated privileges on the target systen.


How to mitigate CVE-2026-26131

Install updates from vendor's website.

Sources