What is CVE-2025-21416?

CVE-2025-21416 is a high-severity vulnerability in Microsoft Azure Virtual Desktop, classified under Missing Authorization. CVSS score: 8.5/10. Published 2025-04-30.

How severe is CVE-2025-21416?

High severity. CVSS v3 base score is 8.5 out of 10.

Is CVE-2025-21416 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Microsoft Azure Virtual Desktop

CVE-2025-21416

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

Vulnerability class: Broken Access Control

EPSS: 0.007 (49.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

Azure Virtual Desktop Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-21416?: CVE-2025-21416 is a high-severity vulnerability in Microsoft Azure Virtual Desktop, classified under Missing Authorization. CVSS score: 8.5/10. Published 2025-04-30.
How severe is CVE-2025-21416?: High severity. CVSS v3 base score is 8.5 out of 10.
Is CVE-2025-21416 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.