CVE intelligence and bounded remediation

CVE-2020-15800 — A vulnerability has been identified in SCALANCE X-200 switch family (incl

Critical CVSS 9.8

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-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). The webserver of the affected devices contains a vulnerability that may lead to a heap overflow condition. An attacker could cause this condition on the webserver by sending specially crafted requests. This could stop the webserver temporarily.

Severity
Critical
CVSS
9.8 (3.1)
Published
2021-01-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-122, CWE-787

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

Buffer bounds, memory safety, and memory corruption

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.