CVE-2026-32093

Received Received - Intake

Race Condition in fdwsd.dll Enables Local Privilege Escalation

Publication date: 2026-04-14

Last updated on: 2026-04-20

Assigner: Microsoft Corporation

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-04-14

Last Modified

2026-04-20

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-32093

EUVD

EUVD-2026-22532

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9060 (exc)
microsoft	windows_10_1607	to 10.0.14393.9060 (exc)
microsoft	windows_10_1809	to 10.0.17763.8644 (exc)
microsoft	windows_10_1809	to 10.0.17763.8644 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7184 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7184 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7184 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7184 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7184 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7184 (exc)
microsoft	windows_11_23h2	to 10.0.22631.6936 (exc)
microsoft	windows_11_23h2	to 10.0.22631.6936 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8246 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8246 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8246 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8246 (exc)
microsoft	windows_11_26h1	to 10.0.28000.1836 (exc)
microsoft	windows_11_26h1	to 10.0.28000.1836 (exc)
microsoft	windows_server_2016	to 10.0.14393.9060 (exc)
microsoft	windows_server_2019	to 10.0.17763.8644 (exc)
microsoft	windows_server_2022	to 10.0.20348.5020 (exc)
microsoft	windows_server_2022_23h2	to 10.0.25398.2274 (exc)
microsoft	windows_server_2025	to 10.0.26100.32690 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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().
CWE-367	The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

Attack-Flow Graph

Executive Summary

This vulnerability is a race condition in the Function Discovery Service (fdwsd.dll) caused by concurrent execution using a shared resource without proper synchronization.

An authorized attacker can exploit this flaw locally to elevate their privileges on the affected system.

Impact Analysis

The vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access than intended.

This can lead to unauthorized actions, including full control over the affected system, compromising confidentiality, integrity, and availability.

Compliance Impact

This vulnerability allows an authorized attacker to elevate privileges locally through a race condition in the Function Discovery Service. Such an elevation of privilege can potentially lead to unauthorized access or modification of sensitive data.

Because of the potential for unauthorized access and data compromise, this vulnerability could negatively impact compliance with standards and regulations like GDPR and HIPAA, which require strict controls on access to sensitive personal and health information.

Hi! I’m here to help you understand CVE-2026-32093. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70