What’s Vulnerable › Vulnerabilities

CVE-2019-13944

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-12 · updated 2026-06-17
• Weakness: CWE-23

Description

A vulnerability has been identified in EN100 Ethernet module DNP3 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.37), EN100 Ethernet module IEC104 variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions). A vulnerability in the integrated web server of the affected devices could allow unauthorized attackers to obtain sensitive information about the device, including logs and configurations. At the time of advisory publication no public exploitation of this security vulnerability was known.

Affected products

• Siemens En100 Ethernet Module With Firmware Variant Dnp3 Tcp: all versions
• Siemens En100 Ethernet Module With Firmware Variant Iec104: all versions
• Siemens En100 Ethernet Module With Firmware Variant Iec 61850: before 4.37 — fixed in 4.37
• Siemens En100 Ethernet Module With Firmware Variant Modbus Tcp: all versions
• Siemens En100 Ethernet Module With Firmware Variant Profinet Io: all versions

How to fix

Upgrade to a fixed version: Siemens En100 Ethernet Module With Firmware Variant Iec 61850 4.37. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-418979.pdf
• https://www.us-cert.gov/ics/advisories/icsa-19-344-07
• https://cert-portal.siemens.com/productcert/pdf/ssa-418979.pdf
• https://www.us-cert.gov/ics/advisories/icsa-19-344-07

Get alerted when CVE-2019-13944 or the next vulnerability affects your stack