What is CVE-2026-70161?

CVE-2026-70161 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. .NET Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-70161 cover?

CVE-2026-70161 covers the following CVE IDs: CVE-2026-70161. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-70161?

CVE-2026-70161 has a CVSS v3 base score of 7.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-70161?

CVE-2026-70161 affects 5 products, including: .NET 10.0 installed on Windows; .NET 11.0 installed on Windows; .NET 9.0 installed on Windows; Microsoft Visual Studio 2022 version 17.14; Microsoft Visual Studio 2026 version 18.10.

CVE-2026-70161HighCVSS 7.3

.NET Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-70161 →

📋 Description

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

🎯 Affected products5

.NET 10.0 installed on Windows
.NET 11.0 installed on Windows
.NET 9.0 installed on Windows
Microsoft Visual Studio 2022 version 17.14
Microsoft Visual Studio 2026 version 18.10

✅ Remediation

KBRelease Notes (Security Update) — fixed build 11.0.100-rc.2 KBRelease Notes (Security Update) — fixed build 9.0.319, 9.0.122 KB5130036 (Security Update) — fixed build 10.0.402 KBRelease Notes (Security Update) — fixed build 18.10.4 KBRelease Notes (Security Update) — fixed build 17.14.42

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70161
patchhttps://dotnet.microsoft.com/download/dotnet/11.0
patchhttps://dotnet.microsoft.com/download/dotnet/9.0
patchhttps://dotnet.microsoft.com/download/dotnet/10.0
referencehttps://support.microsoft.com/help/5130036