CVE-2026-70069

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Stack-based Buffer Overflow in Windows DHCP Server

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70069

EUVD

EUVD-2026-99863

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	Server 2012 6.2.9200.0
Microsoft	Windows	Server 2012 (Server Core installation) 6.2.9200.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

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 the Windows DHCP Server. It allows an authorized attacker to execute arbitrary code remotely over a network by exploiting a flaw in memory handling.

Detection Guidance

Detecting this vulnerability requires monitoring Windows DHCP Server for unusual activity or crashes. Check Windows Event Logs for DHCP Server errors or warnings. Use PowerShell commands like Get-WinEvent -LogName System -ProviderName Microsoft-Windows-DHCP-Server to review DHCP-related events. Ensure your DHCP Server is updated with the latest patches from Microsoft.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially gaining control over it. This could lead to data theft, system damage, or further network compromise if the DHCP server is compromised.

Compliance Impact

This vulnerability allows remote code execution via a stack-based buffer overflow in Windows DHCP Server. Such unauthorized code execution could lead to data breaches, unauthorized access, or data exfiltration, which are critical violations under GDPR and HIPAA. Organizations using affected Windows versions may face compliance failures and regulatory penalties if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows DHCP Server to patch the stack-based buffer overflow vulnerability.

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