Review reviewHigh

CVE-2026-50652

Microsoft Azure Active Directory, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5 AND 4.7.2

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

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.15%

Technical severityCVSS 7.5

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

Product: Microsoft Azure Active Directory, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5 AND 4.7.2
Affected versions: >= 2021 < 5.7.1, >= 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168, >= 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0, >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0, >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0, >= 4.7.0 < 4.7.4143.0, >= 4.8.0 < 4.8.4803.0, >= 4.8.0.0 < 4.8.9340.0, 3.5, 4.8.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8
Fixed versions: No verified fixed-version field is available yet

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Azure Active Directory, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5 AND 4.7.2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.