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Vulnerability record · CVE-2020-15799 · published 12 January 2021

CVE-2020-15799: Siemens scalance x200-4pirt firmware missing authentication for critical function vulnerability

Siemens · Scalance X200 4pirt Firmware

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). The vulnerability could allow an unauthenticated attacker to reboot the device over the network by using special urls from integrated web server of the affected products.

6.5 CVSS 3.1 Medium EPSS 1.1% · top 36.3% CWE-306 · Missing authentication for critical function
6.5CVSS 3.1 base score, v2 7.1
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
66Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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). The vulnerability could allow an unauthenticated attacker to reboot the device over the network by using special urls from integrated web server of the affected products.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

66 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-139628.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-139628.pdf Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-15800Siemens scalance x200-4pirt firmware heap-based buffer overflow vulnerabilityA vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch fam…EPSS 1.7%9.8CVE-2020-25226Siemens scalance x200-4pirt firmware heap-based buffer overflow vulnerabilityA vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch fam…EPSS 1.7%9.6CVE-2022-26649Siemens scalance x204-2 firmware classic buffer overflow vulnerabilityA vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P I…EPSS 1.3%8.8CVE-2022-26647Siemens scalance x200-4p irt firmware vulnerabilityA vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P I…EPSS 1.1%8.2CVE-2022-26648Siemens scalance x204-2 firmware classic buffer overflow vulnerabilityA vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P I…EPSS 0.94%7.4CVE-2023-29054Siemens scalance x200-4p irt firmware inadequate encryption strength vulnerabilityA vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.2), SCALANCE X201-3P IRT (All versions < V5.5.2), SCALANCE X201-3P I…EPSS 0.26%6.1CVE-2022-40631Siemens scalance x200-4p irt firmware cross-site scripting vulnerabilityA vulnerability has been identified in SCALANCE X200-4P IRT (All versions < V5.5.0), SCALANCE X201-3P IRT (All versions < V5.5.0), SCALANCE X201-3P I…EPSS 0.47%5.9CVE-2020-28391Siemens scalance x200-4pirt firmware hard-coded credentials vulnerabilityA vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch fam…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2020-15799), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.