Vulnerability · Published Jul 14, 2026 · Assigned by microsoft
CVE-2026-50653Azure Active Directory Denial of Service Vulnerability
High 7.5
In plain English
A high-severity infinite loop 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 1.2% (higher than 68% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.2%top 32.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Loop with unreachable exit condition ('infinite loop') 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 8.19.2 |
| 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-835, CWE-400 · 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