CVE intelligence and bounded remediation

CVE-2020-15799 — A vulnerability has been identified in SCALANCE X-200 switch family (incl

High CVSS 7.1

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.

Severity
High
CVSS
7.1 (2.0)
Published
2021-01-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-306

Affected products

  • siemens / scalance_x200-4pirt_firmware
  • siemens / scalance_x201-3pirt_firmware
  • siemens / scalance_x202-2irt_firmware
  • siemens / scalance_x202-2pirt_firmware
  • siemens / scalance_x202-2pirt_siplus_net_firmware
  • siemens / scalance_x204irt_firmware

Showing 6 representative product identities from 66 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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