CVE-2026-32226

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

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*

OR	cpe:2.3:o:microsoft:windows_10_1809:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x64:

Configuration 2 (hide)

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.8:::::::*

OR	cpe:2.3:o:microsoft:windows_10_1809:-::::::arm64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x64:
	cpe:2.3:o:microsoft:windows_10_1809:-::::::x86:
	cpe:2.3:o:microsoft:windows_server_20h2:-::::::x64:

Configuration 3 (hide)

AND

cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*

OR	cpe:2.3:o:microsoft:windows_10_1607:-::::::x64:
	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration 4 (hide)

AND

OR	cpe:2.3:a:microsoft:.net_framework:3.5:-::::::
	cpe:2.3:a:microsoft:.net_framework:4.8.1:::::::*

OR	cpe:2.3:o:microsoft:windows_11_26h1:-::::::arm64:
	cpe:2.3:o:microsoft:windows_11_26h1:-::::::x64:
	cpe:2.3:o:microsoft:windows_server_2025:-::::::x64:

History

No history.

Information

Published : 2026-04-14 18:17

Updated : 2026-07-25 11:10

NVD link : CVE-2026-32226

Mitre link : CVE-2026-32226

CVE.ORG link : CVE-2026-32226

JSON object : View

Products Affected

microsoft

windows_11_26h1
windows_server_20h2
.net_framework
windows_server_2012
windows_10_1607
windows_server_2025
windows_10_1809

CWE

CWE-362

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

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"version": "3.5.0", "lessThan": "2.0.50727.8982 & 3.0.30729.8976", "versionType": "custom"}], "platforms": ["Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.7.2", "versions": [{"status": "affected", "version": "4.7.0", "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for ARM64-based Systems", "Windows 10 Version 1809 for x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8", "versions": [{"status": "affected", "version": "4.8.0", "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for ARM64-based Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 version 21H2 for x64-based Systems", "Windows Server 2022", "Windows Server 2022 (Server Core installation)", "Windows Server, version 20H2 (Server Core Installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8.1", "versions": [{"status": "affected", "version": "4.8.1", "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 Version 22H2 for ARM64-based Systems", "Windows 11 Version 22H2 for x64-based Systems", "Windows 11 Version 23H2 for ARM64-based Systems", "Windows 11 Version 23H2 for x64-based Systems", "Windows 11 Version 24H2 for ARM64-based Systems", "Windows 11 Version 24H2 for x64-based Systems", "Windows 11 Version 25H2 for ARM64-based Systems", "Windows 11 Version 25H2 for x64-based Systems", "Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems", "Windows Server 2022", "Windows Server 2022 (Server Core installation)", "Windows Server 2022, 23H2 Edition (Server Core installation)", "Windows Server 2025", "Windows Server 2025 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "versions": [{"status": "affected", "version": "4.7.0", "lessThan": "4.8.4801.0", "versionType": "custom"}], "platforms": ["Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.7.2", "versions": [{"status": "affected", "version": "10.0.0.0", "lessThan": "2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for ARM64-based Systems", "Windows 10 Version 1809 for x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8", "versions": [{"status": "affected", "version": "4.8.0", "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.4801.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1607 for x64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 Version 22H2 for x64-based Systems", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8.1", "versions": [{"status": "affected", "version": "4.8.0.0", "lessThan": "2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0", "versionType": "custom"}], "platforms": ["Windows Server 2022 (Server Core installation)"]}]}], "published": "2026-04-14T18:17:31.190", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32226", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in .NET Framework allows an unauthorized attacker to deny service over a network."}, {"lang": "es", "value": "Ejecuci\u00f3n concurrente utilizando un recurso compartido con sincronizaci\u00f3n inadecuada ('condici\u00f3n de carrera') en .NET Framework permite a un atacante no autorizado denegar el servicio a trav\u00e9s de una red."}], "lastModified": "2026-07-25T11:10:00.100", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "23317443-1968-4791-9F20-AD3B308A83D1"}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF7A75E-EE27-4AA7-8D84-9D696728A4CE"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*", "vulnerable": false, "matchCriteriaId": "73D24713-D897-408D-893B-77A61982597D"}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*", "vulnerable": false, "matchCriteriaId": "306B7CE6-8239-4AED-9ED4-4C9F5B349F58"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", 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