# CVE-2020-16860: Microsoft Dynamics 365 (on-premises) Remote Code Execution Vulnerability

> An authenticated attacker can execute arbitrary code on Microsoft Dynamics 365 on-premises servers by sending specially crafted web requests.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/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:** 11 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-94j9-g7hv-h89v

## What is CVE-2020-16860?

CVE-2020-16860 is a medium-severity code injection vulnerability in Microsoft Dynamics 365, published on 11 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

<p>A remote code execution vulnerability exists in Microsoft Dynamics 365 (on-premises) when the server fails to properly sanitize web requests to an affected Dynamics server. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SQL service account.
An authenticated attacker could exploit this vulnerability by sending a specially crafted request to a vulnerable Dynamics server.
The security update addresses the vulnerability by correcting how  Microsoft Dynamics 365 (on-premises) validates and sanitizes user input.</p>

## Which versions are affected by CVE-2020-16860?

It affects 1 product.


Products: Microsoft Dynamics 365.

## How do I fix CVE-2020-16860?

No fix has been published for CVE-2020-16860 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-16860 being exploited?

There is no known exploitation of CVE-2020-16860 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Dynamics 365

- [CVE-2026-47647](https://insights.sbomify.com/CVE-2026-47647/): Dynamics 365 Elevation of Privilege Vulnerability (critical 9.9)
- [CVE-2026-42898](https://insights.sbomify.com/CVE-2026-42898/): Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2026-32210](https://insights.sbomify.com/CVE-2026-32210/): Microsoft Dynamics 365 (online) Spoofing Vulnerability (critical 9.3)
- [CVE-2026-42833](https://insights.sbomify.com/CVE-2026-42833/): Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability (critical 9.1)
- [CVE-2024-38182](https://insights.sbomify.com/CVE-2024-38182/): Microsoft Dynamics 365 Elevation of Privilege Vulnerability (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-16860 and fix it if it is affected.

What it is: CVE-2020-16860 is a medium-severity code injection vulnerability in Microsoft Dynamics 365, published on 11 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-16860 in the wild and no public exploit code.

Affected product: Microsoft Dynamics 365. 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-2020-16860/ (Markdown: https://insights.sbomify.com/CVE-2020-16860/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-16860
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-16860
- OSV: https://osv.dev/vulnerability/CVE-2020-16860

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-16860/
Summaries are generated and may contain mistakes; the official description above is the record.