CVE-2022-30938

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-12 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability has been identified in EN100 Ethernet module DNP3 IP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.40), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions). Affected applications contains a memory corruption vulnerability while parsing specially crafted HTTP packets to /txtrace endpoint manupulating a specific argument. This could allow an attacker to crash the affected application leading to a denial of service condition

Affected products

Siemens En100 Ethernet Module Dnp3 Ip Firmware: all versions
Siemens En100 Ethernet Module Iec 104 Firmware: all versions
Siemens En100 Ethernet Module Iec 61850 Firmware: before 4.40 — fixed in 4.40
Siemens En100 Ethernet Module Modbus Tcp Firmware: all versions
Siemens En100 Ethernet Module Profinet Io Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens En100 Ethernet Module Iec 61850 Firmware 4.40. Check the vendor advisory for mitigations.

References

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