Denial of Service Vulnerability in Azure Active Directory by Microsoft
CVE-2026-50653

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Azure Active Directory
Microsoft .net Framework 3.5
Microsoft .net Framework 3.5 And 4.7.2
Microsoft .net Framework 3.5 And 4.8
Vendor
CVE Published:
14 July 2026

What is CVE-2026-50653?

A vulnerability in Azure Active Directory allows an attacker to exploit a loop with an unreachable exit condition, resulting in a denial of service. This flaw could enable unauthorized users to compromise network availability, making it critical for organizations to implement measures to mitigate potential disruptions caused by this issue.

Affected Version(s)

Azure Active Directory 2021 < 8.19.2

Microsoft .NET Framework 3.5 AND 4.7.2 Windows 10 Version 1607 for 32-bit Systems 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0

Microsoft .NET Framework 3.5 AND 4.8 Windows 10 Version 1809 for 32-bit Systems 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.