Memory corruption in Siemens EN100 Ethernet module DNP3 IP variant
Priority LOW 35CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.01294 70th percentileScored 2026-11-07
Fix Fixed EN100 Ethernet module IEC 61850 variant (Siemens): V4.37
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Siemens | EN100 Ethernet module DNP3 IP variant | All versions | — | No fix listed | CNA |
| Siemens | EN100 Ethernet module IEC 104 variant | All versions | — | No fix listed | CNA |
| Siemens | EN100 Ethernet module IEC 61850 variant | before V4.37 | V4.37 | Patch available | CNA |
| Siemens | EN100 Ethernet module Modbus TCP variant | All versions | — | No fix listed | CNA |
| Siemens | EN100 Ethernet module PROFINET IO variant | All versions | — | No fix listed | CNA |
- EN100 Ethernet module DNP3 IP variant VendorSiemens Affected All versions Fixed in — No fix listed CNA
- EN100 Ethernet module IEC 104 variant VendorSiemens Affected All versions Fixed in — No fix listed CNA
- EN100 Ethernet module IEC 61850 variant VendorSiemens Affected before V4.37 Fixed in V4.37 Patch available CNA
- EN100 Ethernet module Modbus TCP variant VendorSiemens Affected All versions Fixed in — No fix listed CNA
- EN100 Ethernet module PROFINET IO variant VendorSiemens Affected All versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:en100_ethernet_module_dnp3_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_iec_61850_firmware:*:*:*:*:*:*:*:* | before 4.37 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_modbus_tcp_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_profinet_io_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:en100_ethernet_module:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:en100_ethernet_module_dnp3_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_iec_61850_firmware:*:*:*:*:*:*:*:* Versions before 4.37 Vulnerable ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_modbus_tcp_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_profinet_io_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:en100_ethernet_module:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA EN100 Ethernet module IEC 61850 variant (Siemens) Fixed in V4.37
Timeline
- 2026-10-02 Threatist record created from CVE-2022-30937
- 2026-10-03 Alias added: GHSA-963r-c9px-2q9j
References
More Siemens En100 Ethernet Module Dnp3 Firmware vulnerabilities
- TI-2018-03417 Missing authentication in Siemens DIGSI 4 CVSS 3.0HIGH 7.5
- TI-2018-03415 Missing authentication in Siemens EN100 Ethernet module IEC 61850 variant CVSS 3.0HIGH 7.5
- TI-2018-03416 A vulnerability has been identified in DIGSI 4 (All versions < V4.92), EN100 Ethernet… CVSS 3.0MEDIUM 5.3
Sources
- CVE-2022-30937 · CVE Program
- CVE-2022-30937 · NVD
- FIRST EPSS
- GHSA-963r-c9px-2q9j · GitHub Advisory Database · CC BY 4.0
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