Stack-based Buffer Overflow in Windows Hyper-V

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69910

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_hyper-v	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow vulnerability in Windows Hyper-V. It allows an unauthorized attacker to execute arbitrary code remotely over a network by exploiting a flaw in memory handling.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially gaining full control. This could lead to data theft, system damage, or unauthorized access to connected resources.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows Hyper-V immediately to patch the stack-based buffer overflow vulnerability.

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