# CVE-2019-3929: Crestron Multiple Products Command Injection

> Remote unauthenticated attackers can execute arbitrary OS commands as root via the file_transfer.cgi endpoint on various wireless presentation devices.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 15 Apr 2022 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Apr 2019
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-m297-v8rg-x5fh

## What is CVE-2019-3929?

CVE-2019-3929 is a critical command injection vulnerability in Crestron AirMedia, Barco WePresent, Extron ShareLink, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4., published on 30 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Crestron AM-100 firmware 1.6.0.2, Crestron AM-101 firmware 2.7.0.1, Barco wePresent WiPG-1000P firmware 2.3.0.10, Barco wePresent WiPG-1600W before firmware 2.4.1.19, Extron ShareLink 200/250 firmware 2.0.3.4, Teq AV IT WIPS710 firmware 1.1.0.7, SHARP PN-L703WA firmware 1.4.2.3, Optoma WPS-Pro firmware 1.0.0.5, Blackbox HD WPS firmware 1.0.0.5, InFocus LiteShow3 firmware 1.0.16, and InFocus LiteShow4 2.0.0.7 are vulnerable to command injection via the file_transfer.cgi HTTP endpoint. A remote, unauthenticated attacker can use this vulnerability to execute operating system commands as root.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-3929?

It affects 12 products.


Products: Barco Wepresent Wipg-1000p Firmware, Barco Wepresent Wipg-1600w Firmware, Blackbox Hd Wireless Presentation System Firmware, Crestron Am-100 Firmware, Crestron Am-101 Firmware, Extron Sharelink 200 Firmware, Extron Sharelink 250 Firmware, Infocus Liteshow3 Firmware, Infocus Liteshow4 Firmware, Optoma Wps-Pro Firmware, Sharp Pn-L703wa Firmware, Teqavit Wips710 Firmware.

## How do I fix CVE-2019-3929?

No fix has been published for CVE-2019-3929 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 6 May 2022.

## Is CVE-2019-3929 being exploited?

Yes. Attackers have exploited CVE-2019-3929 in the wild since at least 15 Apr 2022.

Public exploit code:

- Crestron/Barco/Extron/InFocus/TeqAV Remote Command Injection (CVE-2019-3929) Metasploit Module (github_poc): https://github.com/xfox64x/CVE-2019-3929
- Barco WePresent file_transfer.cgi Command Injection (metasploit)
- Crestron AM/Barco wePresent WiPG/Extron ShareLink/Teq AV IT/SHARP PN-L703WA/Optoma WPS-Pro/Blackbox HD WPS/InFocus LiteShow - Remote Command Injection (exploitdb)
- Barco WePresent - file_transfer.cgi Command Injection (Metasploit) (exploitdb)
- Barco/AWIND OEM Presentation Platform - Remote Command Injection (nuclei): http/cves/2019/CVE-2019-3929.yaml

## Other vulnerabilities in Crestron AirMedia, Barco WePresent, Extron ShareLink, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4.

- [CVE-2019-3930](https://insights.sbomify.com/CVE-2019-3930/): Memory corruption in Crestron AirMedia, Barco WePresent, Extron ShareLink, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4. (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3929 and fix it if it is affected.

What it is: CVE-2019-3929 is a critical command injection vulnerability in Crestron AirMedia, Barco WePresent, Extron ShareLink, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4., published on 30 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2019-3929 in the wild since at least 15 Apr 2022.

Affected product: Crestron AirMedia, Barco WePresent, Extron ShareLink, Teq AV IT WIPS710, SHARP PN-L703WA, Optoma WPS-Pro, Blackbox HD WPS, InFocus LiteShow3, and InFocus LiteShow4.. 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-2019-3929/ (Markdown: https://insights.sbomify.com/CVE-2019-3929/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3929
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3929
- OSV: https://osv.dev/vulnerability/CVE-2019-3929

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-3929/
Summaries are generated and may contain mistakes; the official description above is the record.