Missing authentication in Siemens DIGSI 4
Priority LOW 36CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-306.
Summary
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 allows an unauthenticated remote user to upload a modified device configuration overwriting access authorization passwords.
Why it matters now
EPSS 0.01777 78th percentileScored 2026-11-07
Fix Fixed DIGSI 4 (Siemens): V4.92EN100 Ethernet module DNP3 variant (Siemens): V1.05.00+1 more product
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 | DIGSI 4 | before V4.92 | V4.92 | Patch available | CNA |
| Siemens | EN100 Ethernet module DNP3 variant | before V1.05.00 | V1.05.00 | Patch available | CNA |
| Siemens | EN100 Ethernet module IEC 104 variant | All versions | — | No fix listed | CNA |
| Siemens | EN100 Ethernet module IEC 61850 variant | before V4.30 | V4.30 | 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 |
- DIGSI 4 VendorSiemens Affected before V4.92 Fixed in V4.92 Patch available CNA
- EN100 Ethernet module DNP3 variant VendorSiemens Affected before V1.05.00 Fixed in V1.05.00 Patch available 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 V4.30 Fixed in V4.30 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 · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:siprotec_compact_7sj80_firmware:*:*:*:*:*:*:*:* | before 4.77 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:siprotec_compact_7sj80:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:siprotec_compact_7sk80_firmware:*:*:*:*:*:*:*:* | before 4.77 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:siprotec_compact_7sk80:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:siprotec_4_7sj66_firmware:*:*:*:*:*:*:*:* | before 4.30 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:siprotec_4_7sj66:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:digsi_4:*:*:*:*:*:*:*:* | before 4.92 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:en100_ethernet_module_iec_104:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_dnp3_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
- cpe:2.3:o:siemens:siprotec_compact_7sj80_firmware:*:*:*:*:*:*:*:* Versions before 4.77 Vulnerable ·Siemens
- cpe:2.3:h:siemens:siprotec_compact_7sj80:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:siprotec_compact_7sk80_firmware:*:*:*:*:*:*:*:* Versions before 4.77 Vulnerable ·Siemens
- cpe:2.3:h:siemens:siprotec_compact_7sk80:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:siprotec_4_7sj66_firmware:*:*:*:*:*:*:*:* Versions before 4.30 Vulnerable ·Siemens
- cpe:2.3:h:siemens:siprotec_4_7sj66:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:digsi_4:*:*:*:*:*:*:*:* Versions before 4.92 Vulnerable ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:en100_ethernet_module_iec_104:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_dnp3_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:siemens:en100_ethernet_module_dnp3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_modbus_tcp_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:en100_ethernet_module_modbus_tcp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | 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_profinet_io:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:en100_ethernet_module_iec_61850_firmware:*:*:*:*:*:*:*:* | before 4.30 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:en100_ethernet_module_iec_61850:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:h:siemens:en100_ethernet_module_dnp3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_modbus_tcp_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:en100_ethernet_module_modbus_tcp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·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_profinet_io:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:en100_ethernet_module_iec_61850_firmware:*:*:*:*:*:*:*:* Versions before 4.30 Vulnerable ·Siemens
- cpe:2.3:h:siemens:en100_ethernet_module_iec_61850:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA DIGSI 4 (Siemens) Fixed in V4.92
- Fix · CNA EN100 Ethernet module DNP3 variant (Siemens) Fixed in V1.05.00
- Fix · CNA EN100 Ethernet module IEC 61850 variant (Siemens) Fixed in V4.30
Timeline
- 2026-10-02 Threatist record created from CVE-2018-4840
- 2026-10-03 Alias added: GHSA-2fqf-9j8p-6mg2
References
More Siemens Digsi 4 vulnerabilities
- TI-2020-15482 Incorrect default permissions in Siemens DIGSI 4 CVSS 3.1HIGH 7.8
- TI-2018-03416 A vulnerability has been identified in DIGSI 4 (All versions < V4.92), EN100 Ethernet… CVSS 3.0MEDIUM 5.3
Sources
- CVE-2018-4840 · CVE Program
- CVE-2018-4840 · NVD
- FIRST EPSS
- GHSA-2fqf-9j8p-6mg2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences