CVE-2026-50683

Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in Windows DHCP Server

Publication date: 2026-07-14

Last updated on: 2026-07-21

Assigner: Microsoft Corporation

Description

Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to elevate privileges over an adjacent network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-14

Last Modified

2026-07-21

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50683

EUVD

EUVD-2026-44142

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_server_2016	to 10.0.14393.9339 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in the Windows DHCP Server. An authorized attacker on an adjacent network can exploit it to elevate their privileges on the affected system.

Impact Analysis

An attacker could gain elevated privileges, allowing them to take control of the system or perform unauthorized actions. This could lead to data breaches, system compromise, or further network infiltration.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations must address it to maintain regulatory compliance.

Mitigation Strategies

Apply the latest security update from Microsoft for Windows DHCP Server to address the heap-based buffer overflow vulnerability.

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