# CVE-2014-0789: Schneider Electric OPC Factory Server Buffer Overflow

> Remote attackers can cause denial of service in Schneider Electric OPC Factory Server via buffer overflows in the ActiveX control.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Apr 2014
- **Updated:** 25 Sep 2025
- **Also known as:** GHSA-qqfp-jq79-xh4v

## What is CVE-2014-0789?

CVE-2014-0789 is a medium-severity memory corruption vulnerability in Schneider Electric OPC Factory Server (OFS), published on 4 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Multiple buffer overflows in the OPC Automation 2.0 Server Object ActiveX control in Schneider Electric OPC Factory Server (OFS) TLXCDSUOFS33 3.5 and earlier, TLXCDSTOFS33 3.5 and earlier, TLXCDLUOFS33 3.5 and earlier, TLXCDLTOFS33 3.5 and earlier, and TLXCDLFOFS33 3.5 and earlier allow remote attackers to cause a denial of service via long arguments to unspecified functions.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2014-0789?

It affects 5 products.


Products: Schneider-Electric Opc Factory Server Tlxcdlfofs, Schneider-Electric Opc Factory Server Tlxcdltofs, Schneider-Electric Opc Factory Server Tlxcdluofs, Schneider-Electric Opc Factory Server Tlxcdstofs, Schneider-Electric Opc Factory Server Tlxcdsuofs.

## How do I fix CVE-2014-0789?

No fix has been published for CVE-2014-0789 yet. Limit exposure of the affected software until one is available.

## Is CVE-2014-0789 being exploited?

There is no known exploitation of CVE-2014-0789 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-0789 and fix it if it is affected.

What it is: CVE-2014-0789 is a medium-severity memory corruption vulnerability in Schneider Electric OPC Factory Server (OFS), published on 4 Apr 2014. 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-2014-0789 in the wild and no public exploit code.

Affected product: Schneider Electric OPC Factory Server (OFS). 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-2014-0789/ (Markdown: https://insights.sbomify.com/CVE-2014-0789/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-0789
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-0789
- OSV: https://osv.dev/vulnerability/CVE-2014-0789

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-0789/
Summaries are generated and may contain mistakes; the official description above is the record.