# CVE-2018-8609: Code injection in Microsoft Dynamics 365

> Attackers can execute arbitrary code remotely on Microsoft Dynamics 365 on-premises servers due to improper sanitization of web requests.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 14 Nov 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-h52h-3mwv-hvcq

## What is CVE-2018-8609?

CVE-2018-8609 is a high-severity code injection vulnerability in Microsoft Dynamics 365, published on 14 Nov 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A remote code execution vulnerability exists in Microsoft Dynamics 365 (on-premises) version 8 when the server fails to properly sanitize web requests to an affected Dynamics server, aka "Microsoft Dynamics 365 (on-premises) version 8 Remote Code Execution Vulnerability." This affects Microsoft Dynamics 365.

Weakness: CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2018-8609?

It affects 1 product.


Products: Microsoft Dynamics 365.

## How do I fix CVE-2018-8609?

No fix has been published for CVE-2018-8609 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-8609 being exploited?

There is no known exploitation of CVE-2018-8609 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-2018-8609 and fix it if it is affected.

What it is: CVE-2018-8609 is a high-severity code injection vulnerability in Microsoft Dynamics 365, published on 14 Nov 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-8609 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-2018-8609/ (Markdown: https://insights.sbomify.com/CVE-2018-8609/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8609
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8609
- OSV: https://osv.dev/vulnerability/CVE-2018-8609

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8609/
Summaries are generated and may contain mistakes; the official description above is the record.