CVE-2026-32226

Published: Apr 14, 2026Modified: Jun 17, 2026

5.9

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 2.2 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network.

Affected (4)

Products: Microsoft: .net Framework

Microsoft

1 product

.net Framework

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Microsoft .net Framework	Version 4.7.2

Configuration B

4 platform

Running on/with	Platform Versions
Microsoft Windows 10 1809	All versions
Microsoft Windows 10 1809	All versions
Microsoft Windows 10 1809	All versions
Microsoft Windows Server 20h2	All versions

Configuration C

1 vulnerable · 3 platform

Vulnerable Software	Affected Versions
Microsoft .net Framework	Version 4.8

Running on/with	Platform Versions
Microsoft Windows 10 1607	All versions
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2

Configuration D

2 vulnerable · 3 platform

Vulnerable Software	Affected Versions
Microsoft .net Framework	Version 3.5
Microsoft .net Framework	Version 4.8.1

Running on/with	Platform Versions
Microsoft Windows 11 26h1	All versions
Microsoft Windows 11 26h1	All versions
Microsoft Windows Server 2025	All versions

Related CWEs

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a code sequence that can run concurrently with other code, and the code sequence 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 that is operating concurrently.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.