Vulnerability · Published Jul 14, 2026 · Assigned by microsoft
CVE-2026-50652Azure Active Directory Denial of Service Vulnerability
High 7.5
In plain English
A high-severity unsafe deserialization in Azure Active Directory from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.7%top 22.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Azure Active Directory | 2021 – before 5.7.1 |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 – before 2.0.50727.9182 & 3.0.30729.9168 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 – before 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 – before 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 – before 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 – before 4.7.4143.0 |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 – before 4.8.4803.0 |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 – before 4.8.9340.0 |
Weakness: CWE-502 · Vector: 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
References
- Azure Active Directory Denial of Service Vulnerability vendor-advisory, patch