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CVE tracker

.NET Framework Security Feature Bypass Vulnerability

CVE-2026-108398High 8.8

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Research and translation in progress – available shortly.

Information from Microsoft (Patch Tuesday October 2026)

Severity (Microsoft)
Important
Impact
Security feature bypass – .NET Framework
Status on Patch Tuesday
Publicly disclosed
Exploitability assessment
Exploitation less likely
Product family
Developer tools (.NET, Visual Studio …)
Updates (KB)
KB5126868, KB5127666, KB5127685, KB5127683, KB5127687, KB5127667

Entry in the Microsoft Security Update Guide

Public exploits

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Original description (NVD)

Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.

NVD references (1)

Sources

The tracker combines official, freely usable data sources – updated continuously:

This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.

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