# CVE-2021-22704: Path traversal in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0)

> Attackers can exploit path traversal via FTP to cause denial of service or access unauthorized system information on Schneider Electric HMI products.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gw58-6f33-3447

## What is CVE-2021-22704?

CVE-2021-22704 is a critical path traversal vulnerability in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0), published on 2 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory vulnerability exists in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0) that could cause a Denial of Service or unauthorized access to system information when connecting to the Harmony HMI over FTP.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-22704?

It affects 2 products.


Products: Schneider-Electric Ecostruxure Machine Expert, Schneider-Electric Vijeo Designer.

## How do I fix CVE-2021-22704?

No fix has been published for CVE-2021-22704 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22704 being exploited?

There is no known exploitation of CVE-2021-22704 in the wild and no public exploit code.

## Other vulnerabilities in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0)

- [CVE-2020-7487](https://insights.sbomify.com/CVE-2020-7487/): Code injection in EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions) (critical 9.8)
- [CVE-2020-7489](https://insights.sbomify.com/CVE-2020-7489/): Code injection in SoMachine Basic (all versions)EcoStruxure Machine Expert – Basic (all versions)Modicon M100 Logic Controller (all versions)Modicon M200 Logic Controller (all versions)Modicon M221 Logic Controller (all versions) (critical 9.8)
- [CVE-2021-22705](https://insights.sbomify.com/CVE-2021-22705/): Memory corruption in Harmony HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ) or EcoStruxure Machine Expert (all versions prior to V2.0) (high 7.8)
- [CVE-2020-7488](https://insights.sbomify.com/CVE-2020-7488/): Information disclosure in EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22704 and fix it if it is affected.

What it is: CVE-2021-22704 is a critical path traversal vulnerability in Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0), published on 2 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22704 in the wild and no public exploit code.

Affected product: Harmony/HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ), Vijeo Designer Basic (all versions prior to V1.2), or EcoStruxure Machine Expert (all versions prior to V2.0). 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-2021-22704/ (Markdown: https://insights.sbomify.com/CVE-2021-22704/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22704
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22704
- OSV: https://osv.dev/vulnerability/CVE-2021-22704

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22704/
Summaries are generated and may contain mistakes; the official description above is the record.