# CVE-2020-11999: Code injection in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software

> Attackers can execute unauthorized code and modify data via an exposed API in Rockwell Automation industrial software.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jun 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hjcj-7cv6-7vcj

## What is CVE-2020-11999?

CVE-2020-11999 is a high-severity code injection vulnerability in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software, published on 15 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FactoryTalk Linx versions 6.00, 6.10, and 6.11, RSLinx Classic v4.11.00 and prior,Connected Components Workbench: Version 12 and prior, ControlFLASH: Version 14 and later, ControlFLASH Plus: Version 1 and later, FactoryTalk Asset Centre: Version 9 and later, FactoryTalk Linx CommDTM: Version 1 and later, Studio 5000 Launcher: Version 31 and later Stud, 5000 Logix Designer software: Version 32 and prior is vulnerable. An exposed API call allows users to provide files to be processed without sanitation. This may allow an attacker to specify a filename to execute unauthorized code and modify files or data.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-11999?

It affects 2 products.


Products: Rockwellautomation Factorytalk Linx, Rockwellautomation Rslinx Classic.

## How do I fix CVE-2020-11999?

No fix has been published for CVE-2020-11999 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-11999 being exploited?

There is no known exploitation of CVE-2020-11999 in the wild and no public exploit code.

## Other vulnerabilities in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software

- [CVE-2020-27251](https://insights.sbomify.com/CVE-2020-27251/): Memory corruption in FactoryTalk Linx (critical 9.8)
- [CVE-2020-12001](https://insights.sbomify.com/CVE-2020-12001/): Path traversal in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software (critical 9.8)
- [CVE-2025-9067](https://insights.sbomify.com/CVE-2025-9067/): Rockwell Automation FactoryTalk® Linx Privilege Escalation Vulnerabilities (high 8.5)
- [CVE-2025-9068](https://insights.sbomify.com/CVE-2025-9068/): Rockwell Automation FactoryTalk® Linx Privilege Escalation Vulnerabilities (high 8.5)
- [CVE-2025-7972](https://insights.sbomify.com/CVE-2025-7972/): Rockwell Automation FactoryTalk® Linx Network Browser Security Bypass Vulnerability (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-11999 and fix it if it is affected.

What it is: CVE-2020-11999 is a high-severity code injection vulnerability in FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer software, published on 15 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-11999 in the wild and no public exploit code.

Affected product: FactoryTalk Linx, RSLinx Classic, Connected Components Workbench, ControlFLASH Plus, FactoryTalk Asset Centre, FactoryTalk Linx CommDTM, Studio 5000 Launcher, Studio 5000 Logix Designer 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-2020-11999/ (Markdown: https://insights.sbomify.com/CVE-2020-11999/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-11999
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-11999
- OSV: https://osv.dev/vulnerability/CVE-2020-11999

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-11999/
Summaries are generated and may contain mistakes; the official description above is the record.