# CVE-2025-21416: Azure Virtual Desktop Elevation of Privilege Vulnerability

> An authorized attacker can elevate privileges in Azure Virtual Desktop due to missing authorization checks.

- **Severity:** High 8.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Apr 2025
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-h35h-mv3v-626v

## What is CVE-2025-21416?

CVE-2025-21416 is a high-severity missing authorization vulnerability in Microsoft Azure Virtual Desktop, published on 30 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2025-21416?

It affects 1 product.


Products: Microsoft Azure Virtual Desktop.

## How do I fix CVE-2025-21416?

No fix has been published for CVE-2025-21416 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-21416 being exploited?

There is no known exploitation of CVE-2025-21416 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21416 and fix it if it is affected.

What it is: CVE-2025-21416 is a high-severity missing authorization vulnerability in Microsoft Azure Virtual Desktop, published on 30 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-21416 in the wild and no public exploit code.

Affected product: Microsoft Azure Virtual Desktop. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-21416/ (Markdown: https://insights.sbomify.com/CVE-2025-21416/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21416
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21416
- OSV: https://osv.dev/vulnerability/CVE-2025-21416

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21416/
Summaries are generated and may contain mistakes; the official description above is the record.