CVE-2018-4840
7.5 · HIGHOverview
CVE-2018-4840 is a high-severity vulnerability affecting siemens siprotec_compact_7sj80_firmware. It was published on March 8, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from siemens. Update siprotec_compact_7sj80_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| siemens | siprotec_compact_7sj80_firmware | >= 0, < 4.77 | Affected |
| siemens | siprotec_compact_7sk80_firmware | >= 0, < 4.77 | Affected |
| siemens | siprotec_4_7sj66_firmware | >= 0, < 4.30 | Affected |
| siemens | digsi_4 | >= 0, < 4.92 | Affected |
| siemens | en100_ethernet_module_iec_61850_firmware | >= 0, < 4.30 | Affected |
Frequently Asked Questions
What is CVE-2018-4840?
CVE-2018-4840 is a high-severity vulnerability affecting siemens siprotec_compact_7sj80_firmware. It was published on March 8, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).
How severe is CVE-2018-4840?
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-4840?
Check the references section for vendor advisories and patches from siemens. Update siprotec_compact_7sj80_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-4840?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-4840 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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