CVE-2026-70161

.NET Elevation of Privilege Vulnerability

State: Published
Severity: 7.3 High
Published: Oct 13, 2026
Updated: Oct 31, 2026
Reserved: Aug 3, 2026

Description

Improper limitation of a pathname to a restricted directory ('path traversal') in .NET allows an authorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
.NET 10.0 runtimeMicrosoft	10.0.0 to before 10.0.402Affected
.NET 11.0 runtimeMicrosoft	11.0.0 to before 11.0.100-rc.2Affected
.NET 9.0 runtimeMicrosoft	9.0.0 to before 9.0.319, 9.0.122Affected
Microsoft Visual Studio 2022 version 17.14Microsoft	17.14.0 to before 17.14.42Affected
Microsoft Visual Studio 2026 version 18.10Microsoft	18.10.0 to before 18.10.4Affected

References

.NET Elevation of Privilege Vulnerabilityvendor-advisorypatch

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