# CVE-2017-7966: Other in SoMachine HVAC Programming Software

> A DLL hijacking flaw in Schneider Electric SoMachine HVAC allows remote attackers to execute arbitrary code on the target system.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Jun 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-7hr2-2p6f-7h25

## What is CVE-2017-7966?

CVE-2017-7966 is a high-severity vulnerability in Schneider Electric SE SoMachine HVAC Programming Software, published on 7 Jun 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A DLL Hijacking vulnerability in the programming software in Schneider Electric's SoMachine HVAC v2.1.0 allows a remote attacker to execute arbitrary code on the targeted system. The vulnerability exists due to the improper loading of a DLL.

Weakness: CWE-427 (Uncontrolled Search Path Element)

## Which versions are affected by CVE-2017-7966?

It affects 1 product.


Products: Schneider-Electric Somachine.

## How do I fix CVE-2017-7966?

No fix has been published for CVE-2017-7966 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7966 being exploited?

There is no known exploitation of CVE-2017-7966 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE SoMachine HVAC Programming Software

- [CVE-2014-9200](https://insights.sbomify.com/CVE-2014-9200/): Schneider Electric Device Type Managers (DTMs) Stack-based Buffer Overflow (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7966 and fix it if it is affected.

What it is: CVE-2017-7966 is a high-severity vulnerability in Schneider Electric SE SoMachine HVAC Programming Software, published on 7 Jun 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-7966 in the wild and no public exploit code.

Affected product: Schneider Electric SE SoMachine HVAC Programming Software. 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-2017-7966/ (Markdown: https://insights.sbomify.com/CVE-2017-7966/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7966
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7966
- OSV: https://osv.dev/vulnerability/CVE-2017-7966

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-7966/
Summaries are generated and may contain mistakes; the official description above is the record.