CVE-2026-72943
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Use After Free in Windows Deployment Services

Vulnerability report for CVE-2026-72943, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Use after free in Windows Deployment Services allows an authorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-08
Last Modified
2026-09-24
Generated
2026-09-29
AI Q&A
2026-09-09
EPSS Evaluated
2026-09-27
NVD

Affected Vendors & Products

Showing 10 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2012 r2
microsoft windows_server_2012 *
microsoft windows_server_2025 to 10.0.26100.33438 (exc)
microsoft windows_10_1607 to 10.0.14393.9512 (exc)
microsoft windows_10_1607 to 10.0.14393.9512 (exc)
microsoft windows_10_1809 to 10.0.17763.9245 (exc)
microsoft windows_10_1809 to 10.0.17763.9245 (exc)
microsoft windows_server_2016 to 10.0.14393.9512 (exc)
microsoft windows_server_2019 to 10.0.17763.9245 (exc)
microsoft windows_server_2022 to 10.0.20348.5622 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This is a use-after-free vulnerability in Windows Deployment Services. It allows an authorized attacker to execute arbitrary code remotely over a network by exploiting a memory corruption issue.

Impact Analysis

An attacker could gain control of affected systems, install malware, steal data, or disrupt services. Systems running vulnerable Windows Deployment Services are at risk if exposed to the network.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and access controls. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for Windows Deployment Services as soon as possible to patch the use-after-free vulnerability.

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EPSS Chart