# CVE-2016-8352: Memory corruption in Schneider Electric ConneXium TCSEFEC2*

> A stack-based buffer overflow in the SNMP login process allows remote attackers to execute arbitrary code on Schneider Electric ConneXium firewalls.

- **Severity:** Critical 10.0 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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:** 13 Feb 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-4hw4-vcgq-h32m

## What is CVE-2016-8352?

CVE-2016-8352 is a critical memory corruption vulnerability in Schneider Electric ConneXium TCSEFEC2*, published on 13 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Schneider Electric ConneXium firewalls TCSEFEC23F3F20 all versions, TCSEFEC23F3F21 all versions, TCSEFEC23FCF20 all versions, TCSEFEC23FCF21 all versions, and TCSEFEC2CF3F20 all versions. A stack-based buffer overflow can be triggered during the SNMP login authentication process that may allow an attacker to remotely execute code.

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

## Which versions are affected by CVE-2016-8352?

It affects 1 product.


Products: Schneider-Electric Connexium Firmware.

## How do I fix CVE-2016-8352?

No fix has been published for CVE-2016-8352 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-8352 being exploited?

There is no known exploitation of CVE-2016-8352 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-8352 and fix it if it is affected.

What it is: CVE-2016-8352 is a critical memory corruption vulnerability in Schneider Electric ConneXium TCSEFEC2*, published on 13 Feb 2017. 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-2016-8352 in the wild and no public exploit code.

Affected product: Schneider Electric ConneXium TCSEFEC2*. 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-2016-8352/ (Markdown: https://insights.sbomify.com/CVE-2016-8352/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8352
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8352
- OSV: https://osv.dev/vulnerability/CVE-2016-8352

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-8352/
Summaries are generated and may contain mistakes; the official description above is the record.