CVE-2026-50652: Azure Active Directory Denial of Service Vulnerability

Published Jul 14, 2026
·
Updated

Azure Active Directory Denial of Service Vulnerability

Other sources

Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.

— Microsoft

Affected Software

96 affected componentsFixes available
Microsoft Azure Active Directory<5.7.1, <7.7.3, <8.19.2
5.7.17.7.38.19.2
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=3.5
2.0.50727.8983 & 3.0.30729.8978
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4143.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4143.0
Microsoft .NET Framework=3.5, =4.7.2
2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0
Microsoft .NET Framework=3.5, =4.7.2
2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=4.8
4.8.4803.0
Microsoft .NET Framework=4.8.1
4.8.9340.0
Microsoft .NET Framework=3.5
2.0.50727.9182 & 3.0.30729.9168
All of the following
Microsoft .NET Framework=3.5
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Windows Server 2022
All of the following
Microsoft .NET Framework=4.8.1
Any of the following
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Microsoft Windows Server 2022
All of the following
Microsoft .NET Framework=4.6.2
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Microsoft .NET Framework=4.7
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Microsoft .NET Framework=4.7.1
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
All of the following
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Azure Active Directory

Remediation

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50652

Event History

Jul 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:05 PM
Data Sourced
via MITRE·05:05 PM
DescriptionSeverity
Data Sourced
via NVD·05:17 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-50652?

The severity of CVE-2026-50652 is rated high with a score of 7.5.

2

How do I fix CVE-2026-50652?

To fix CVE-2026-50652, apply the latest security updates provided by Microsoft for Azure Active Directory.

3

What types of attacks does CVE-2026-50652 allow?

CVE-2026-50652 allows an unauthorized attacker to perform a denial of service attack over a network.

4

Which software is affected by CVE-2026-50652?

CVE-2026-50652 affects Microsoft Azure Active Directory and the Microsoft .NET Framework.

5

When was CVE-2026-50652 published?

CVE-2026-50652 was published on July 14, 2026.

Company

Resources

Contact

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