CVE-2026-50652
Azure Active Directory Denial of Service Vulnerability
At a glance
- Severity
- HIGH 7.5
- EPSS
- EPSS 1.73 % · percentile 77 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Analyzed
Description
Deserialization of untrusted data in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | 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 | microsoft |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · secure@microsoft.com (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2026-43781
- GCVE · GCVE-0-2026-50652
CERT-FR advisories
- CERTFR-2026-AVI-0871 — Multiples vulnérabilités dans Microsoft Azure · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*cpe:2.3:a:microsoft:azure_active_directory:-:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Microsoft · Azure Active Directory | affected 2021 < 5.7.1 |
| Microsoft · Microsoft .NET Framework 3.5 | affected 3.5.0 < 2.0.50727.9182 & 3.0.30729.9168 |
| Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2 | affected 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 |
| Microsoft · Microsoft .NET Framework 3.5 AND 4.8 | affected 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 |
| Microsoft · Microsoft .NET Framework 3.5 AND 4.8.1 | affected 4.8.1 < 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 | affected 4.7.0 < 4.7.4143.0 |
| Microsoft · Microsoft .NET Framework 4.8 | affected 4.8.0 < 4.8.4803.0 |
| Microsoft · Microsoft .NET Framework 4.8.1 | affected 4.8.0.0 < 4.8.9340.0 |
References
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |