CVE-2020-28391
5.9 · MEDIUMOverview
CVE-2020-28391 is a medium-severity vulnerability affecting siemens scalance_x200-4pirt_firmware. It was published on January 12, 2021 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. 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 SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
Remediation
Check the references section for vendor advisories and patches from siemens. Update scalance_x200-4pirt_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 | scalance_x200-4pirt_firmware | >= 0, < 5.5.0 | Affected |
| siemens | scalance_x201-3pirt_firmware | >= 0, < 5.5.0 | Affected |
| siemens | scalance_x202-2irt_firmware | >= 0, < 5.5.0 | Affected |
| siemens | scalance_x202-2pirt_firmware | >= 0, < 5.5.0 | Affected |
| siemens | scalance_x202-2pirt_siplus_net_firmware | >= 0, < 5.5.0 | Affected |
| siemens | scalance_x204irt_firmware | >= 0, < 5.5.0 | Affected |
Frequently Asked Questions
What is CVE-2020-28391?
CVE-2020-28391 is a medium-severity vulnerability affecting siemens scalance_x200-4pirt_firmware. It was published on January 12, 2021 and has a CVSS 3.1 base score of 5.9 (MEDIUM).
How severe is CVE-2020-28391?
This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-28391?
Check the references section for vendor advisories and patches from siemens. Update scalance_x200-4pirt_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-2020-28391?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-28391 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
AI agents map your attack surface to find vulnerabilities like this one.
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