Description

Missing authorization in Azure Virtual Desktop allows an authorized attacker to elevate privileges over a network.

Classification

CVE ID: CVE-2025-21416

CVSS Base Severity: HIGH

CVSS Base Score: 8.5

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Products

Vendor: Microsoft

Product: Azure Virtual Desktop

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 15.34% (scored less or equal to compared to others)

EPSS Date: 2025-05-29 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: total

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2025-21416
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21416

Timeline