# 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)

> Attackers can cause denial of service or read system information via improper memory buffer handling in Vijeo Designer or EcoStruxure Machine Expert drivers.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-j25f-486x-cqmj

## What is CVE-2021-22705?

CVE-2021-22705 is a high-severity memory corruption vulnerability 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), published on 26 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists that could cause denial of service or unauthorized access to system information when interacting directly with a driver installed by Vijeo Designer or EcoStruxure Machine Expert

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2021-22705?

It affects 2 products.


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

## How do I fix CVE-2021-22705?

No fix has been published for CVE-2021-22705 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22705 being exploited?

There is no known exploitation of CVE-2021-22705 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 ) 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-2021-22704](https://insights.sbomify.com/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) (critical 9.1)
- [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-2021-22705 and fix it if it is affected.

What it is: CVE-2021-22705 is a high-severity memory corruption vulnerability 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), published on 26 May 2021. 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-2021-22705 in the wild and no public exploit code.

Affected product: Harmony HMI Products Configured by Vijeo Designer (all versions prior to V6.2 SP11 ) 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-2021-22705/ (Markdown: https://insights.sbomify.com/CVE-2021-22705/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22705
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22705
- OSV: https://osv.dev/vulnerability/CVE-2021-22705

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22705/
Summaries are generated and may contain mistakes; the official description above is the record.