CVE-2023-29054: Siemens Scalance x200-4p Irt Firmware

High severity, CVSS 7.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A 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 IRT PRO (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2IRT (All versions < V5.5.2), SCALANCE X202-2P IRT (All versions < V5.5.2), SCALANCE X202-2P IRT PRO (All versions < V5.5.2), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT (All versions < V5.5.2), SCALANCE X204IRT PRO (All versions < V5.5.2), SCALANCE XF201-3P IRT (All versions < V5.5.2), SCALANCE XF202-2P IRT (All versions < V5.5.2), SCALANCE XF204-2BA IRT (All versions < V5.5.2), SCALANCE XF204IRT (All versions < V5.5.2), SIPLUS NET SCALANCE X202-2P IRT (All versions < V5.5.2). The SSH server on affected devices is configured to offer weak ciphers by default. This could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over the connection between legitimate clients and the affected device.

Affected products

  • Siemens Scalance x200-4p Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x201-3p Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x201-3p Irt Pro Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x202-2irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x202-2p Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x202-2p Irt Pro Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x204irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance x204irt Pro Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance XF201-3p Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance XF202-2p Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance XF204-2ba Irt Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Scalance XF204IRT Firmware: before 5.5.2 (fixed in 5.5.2)
  • Siemens Siplus Net Scalance x202-2p Irt Firmware: before 5.5.2 (fixed in 5.5.2)

Published 2023-04-11. Last modified 2026-06-17.