# CVE-2026-40417: Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability

> Weak authentication in Microsoft Dynamics 365 Business Central allows authorized attackers to elevate privileges locally.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 May 2026
- **Updated:** 10 Aug 2026
- **Also known as:** GHSA-x37p-2fc6-57xh

## What is CVE-2026-40417?

CVE-2026-40417 is a high-severity vulnerability in Microsoft Dynamics 365 Business Central 2024 Release Wave 2, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

Weakness: CWE-1390 (Weak Authentication)

## Which versions are affected by CVE-2026-40417?

It affects 1 product.


Products: Microsoft Dynamics 365 Business Central.

## How do I fix CVE-2026-40417?

No fix has been published for CVE-2026-40417 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40417 being exploited?

There is no known exploitation of CVE-2026-40417 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Dynamics 365 Business Central 2024 Release Wave 2

- [CVE-2024-38225](https://insights.sbomify.com/CVE-2024-38225/): Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability (high 8.8)
- [CVE-2024-35249](https://insights.sbomify.com/CVE-2024-35249/): Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability (high 8.8)
- [CVE-2022-41127](https://insights.sbomify.com/CVE-2022-41127/): Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability (high 8.5)
- [CVE-2024-43460](https://insights.sbomify.com/CVE-2024-43460/): Dynamics 365 Business Central Elevation of Privilege Vulnerability (high 8.1)
- [CVE-2024-21380](https://insights.sbomify.com/CVE-2024-21380/): Microsoft Dynamics Business Central/NAV Information Disclosure Vulnerability (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40417 and fix it if it is affected.

What it is: CVE-2026-40417 is a high-severity vulnerability in Microsoft Dynamics 365 Business Central 2024 Release Wave 2, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-40417 in the wild and no public exploit code.

Affected product: Microsoft Dynamics 365 Business Central 2024 Release Wave 2. 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-2026-40417/ (Markdown: https://insights.sbomify.com/CVE-2026-40417/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40417
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40417
- OSV: https://osv.dev/vulnerability/CVE-2026-40417

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-40417/
Summaries are generated and may contain mistakes; the official description above is the record.