CVE-2026-50652

Azure Active Directory Denial of Service Vulnerability

State: Published
Severity: 7.5 High
Published: Jul 14, 2026
Updated: Nov 1, 2026
Reserved: Jun 5, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Azure Active DirectoryMicrosoft	2021 to before 5.7.1Affected
Microsoft .NET Framework 3.5Microsoft	3.5.0 to before 2.0.50727.9182 & 3.0.30729.9168Affected
Microsoft .NET Framework 3.5 AND 4.7.2Microsoft	4.7.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0Affected
Microsoft .NET Framework 3.5 AND 4.8Microsoft	4.8.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0Affected
Microsoft .NET Framework 3.5 AND 4.8.1Microsoft	4.8.1 to before 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0Affected
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2Microsoft	4.7.0 to before 4.7.4143.0Affected
Microsoft .NET Framework 4.8Microsoft	4.8.0 to before 4.8.4803.0Affected
Microsoft .NET Framework 4.8.1Microsoft	4.8.0.0 to before 4.8.9340.0Affected

References

Azure Active Directory Denial of Service Vulnerabilityvendor-advisorypatch

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