# CVE-2026-86938: Privilege escalation in FileMaker Pro

> Local attackers can execute arbitrary code with administrator privileges via DLL hijacking in the FileMaker Pro Windows installer.

- **Severity:** High 7.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 23 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-vqf5-hmj7-qj4q

## What is CVE-2026-86938?

CVE-2026-86938 is a high-severity vulnerability in Claris FileMaker Pro, published on 23 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A DLL hijacking vulnerability in the FileMaker Pro installer for Windows allowed a local user to execute arbitrary code with elevated administrator privileges by placing a malicious DLL file in the installer directory. This vulnerability is addressed in FileMaker Pro version 26.0.3.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-86938?

It affects 1 product.


Products: Claris Filemaker Pro.

## How do I fix CVE-2026-86938?

No fix has been published for CVE-2026-86938 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-86938 being exploited?

There is no known exploitation of CVE-2026-86938 in the wild and no public exploit code.

## Other vulnerabilities in Claris FileMaker Pro

- [CVE-2014-8347](https://insights.sbomify.com/CVE-2014-8347/): Auth bypass in n/a (high 7.8)
- [CVE-2021-44147](https://insights.sbomify.com/CVE-2021-44147/): XML external entity in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-86938 and fix it if it is affected.

What it is: CVE-2026-86938 is a high-severity vulnerability in Claris FileMaker Pro, published on 23 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-86938 in the wild and no public exploit code.

Affected product: Claris FileMaker Pro. 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-2026-86938/ (Markdown: https://insights.sbomify.com/CVE-2026-86938/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-86938
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-86938
- OSV: https://osv.dev/vulnerability/CVE-2026-86938

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-86938/
Summaries are generated and may contain mistakes; the official description above is the record.