NVD

CVE-2026-50324 Detail

Description

Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

Nist CVSS score does not match with CNA score

CNA: Microsoft Corporation

Base Score: 5.9 MEDIUM

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50324	Microsoft Corporation	Patch Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-835	Loop with Unreachable Exit Condition ('Infinite Loop')	Microsoft Corporation

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

CVE Modified by Microsoft Corporation 7/16/2026 6:17:10 PM

Action

Type

Old Value

New Value

Changed

Affected

Record truncated, showing 2048 of 2364 characters.
View Entire Change Record

[{"vendor":"Microsoft","product":"Windows 10 Version 1607","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2012 R2","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23291","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2012 R2 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23291","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2016","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2016 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2022","platforms":["x64-based Systems"],"versions":[{"version":"10.0.20348.0","lessThan":"10.0.20348.5386","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.

Record truncated, showing 2048 of 5878 characters.
View Entire Change Record

[{"vendor":"Microsoft","product":"Microsoft .NET Framework 3.5","platforms":["Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"versions":[{"version":"3.5.0","lessThan":"2.0.50727.8983 & 3.0.30729.8978","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft .NET Framework 3.5 AND 4.7.2","platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)"],"versions":[{"version":"4.7.0","lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft .NET Framework 3.5 AND 4.8","platforms":["Windows 10 Version 1809 for 32-bit 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 Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022 (Server Core installation)"],"versions":[{"version":"4.8.0","lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft .NET Framework 3.5 AND 4.8.1","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 23H2 for ARM64-ba

Initial Analysis by NIST 7/16/2026 3:49:35 PM

Action

Type

Old Value

New Value

Added

CPE Configuration

OR
          *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
          *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
          *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.9339
          *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.9339
          *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.17763.9020
          *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.17763.9020
          *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.9339
          *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.9020
          *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.5386
          *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.33158

Added

Reference Type

Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50324 Types: Patch, Vendor Advisory

New CVE Received from Microsoft Corporation 7/14/2026 2:17:31 PM

Action	Type	New Value
Added	Description	Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
Added	CVSS V3.1	AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE	CWE-835
Added	Reference	https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50324
Added	Affected	Record truncated, showing 2048 of 2364 characters. View Entire Change Record [{"vendor":"Microsoft","product":"Windows 10 Version 1607","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2012 R2","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23291","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2012 R2 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23291","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2016","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2016 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9339","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9020","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2022","platforms":["x64-based Systems"],"versions":[{"version":"10.0.20348.0","lessThan":"10.0.20348.5386","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.

Quick Info

CVE Dictionary Entry:
CVE-2026-50324
NVD Published Date:
07/14/2026
NVD Last Modified:
07/16/2026
Source:
Microsoft Corporation

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Information Technology Laboratory

National Vulnerability Database