What’s Vulnerable › Vulnerabilities

CVE-2022-30937

• 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: 2022-06-14 · 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 < V4.37), 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. This could allow an attacker to crash the affected application leading to a denial of service condition.

Affected products

• Siemens En100 Ethernet Module Dnp3 Firmware: all versions
• Siemens En100 Ethernet Module Iec 104 Firmware: all versions
• Siemens En100 Ethernet Module Iec 61850 Firmware: before 4.37 — fixed in 4.37
• 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 4.37. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-693555.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-693555.pdf

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