CVE-2018-4840 — A vulnerability has been identified in DIGSI 4 (All versions < V4

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 modul

01What is this vulnerability?

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). The device engineering mechanism…

02Affected products

Vendor	Product	Versions
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

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-03-08T17:00:00.000Z
• Last modified: 2024-08-05T05:18:26.487Z

09References

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