# CVE-2022-43749: Privilege escalation in Presto File Server

> Remote authenticated users can bypass security constraints in Synology Presto File Server summary report management, leading to privilege escalation.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **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:** 26 Oct 2022
- **Updated:** 9 May 2025
- **Also known as:** GHSA-fjq5-7jcj-c8j4

## What is CVE-2022-43749?

CVE-2022-43749 is a medium-severity vulnerability in Synology Presto File Server, published on 26 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Improper privilege management vulnerability in summary report management in Synology Presto File Server before 2.1.2-1601 allows remote authenticated users to bypass security constraint via unspecified vectors.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2022-43749?

It affects 1 product.


Products: Synology Presto File Server.

## How do I fix CVE-2022-43749?

No fix has been published for CVE-2022-43749 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-43749 being exploited?

There is no known exploitation of CVE-2022-43749 in the wild and no public exploit code.

## Other vulnerabilities in Synology Presto File Server

- [CVE-2022-43748](https://insights.sbomify.com/CVE-2022-43748/): Path traversal in Presto File Server (medium 5.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-43749 and fix it if it is affected.

What it is: CVE-2022-43749 is a medium-severity vulnerability in Synology Presto File Server, published on 26 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-43749 in the wild and no public exploit code.

Affected product: Synology Presto File Server. 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-2022-43749/ (Markdown: https://insights.sbomify.com/CVE-2022-43749/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-43749
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-43749
- OSV: https://osv.dev/vulnerability/CVE-2022-43749

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-43749/
Summaries are generated and may contain mistakes; the official description above is the record.