Description
Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Azure Active Directory | 2021 – < 5.7.1 | 5.7.1 |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 – < 2.0.50727.9182 & 3.0.30729.9168 | 2.0.50727.9182 & 3.0.30729.9168 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 | 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 | 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 – < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 | 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 – < 4.7.4143.0 | 4.7.4143.0 |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 – < 4.8.4803.0 | 4.8.4803.0 |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 – < 4.8.9340.0 | 4.8.9340.0 |
Advisories 3
- MSRC-CVE-2026-50652 Azure Active Directory Denial of Service Vulnerability Microsoft Security Response Center · Jul 21, 2026
- WID-SEC-2026-2321 Microsoft Azure: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 15, 2026
- NCSC-2026-0233 Kwetsbaarheden verholpen in Microsoft Azure NCSC-NL (Netherlands) · Jul 14, 2026
References
- Azure Active Directory Denial of Service Vulnerability vendor-advisory patch