CVE-2022-34820: Siemens SIMATIC CP 1242-7 v2 Firmware

High severity, CVSS 8.4. EPSS: 2.2% chance of exploitation in the next 30 days.

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). The application does not correctly escape some user provided fields during the authentication process. This could allow an attacker to inject custom commands and execute arbitrary code with elevated privileges.

Affected products

  • Siemens SIMATIC CP 1242-7 v2 Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens SIMATIC CP 1243-1 Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens SIMATIC CP 1243-7 Lte Eu Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens SIMATIC CP 1243-7 Lte Us Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens SIMATIC CP 1243-8 Irc Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens SIMATIC CP 1542sp-1 Irc Firmware: from 2.0, before 2.2.28 (fixed in 2.2.28)
  • Siemens SIMATIC CP 1543-1 Firmware: before 3.0.22 (fixed in 3.0.22)
  • Siemens SIMATIC CP 1543sp-1 Firmware: from 2.0, before 2.2.28 (fixed in 2.2.28)
  • Siemens Siplus Et 200sp CP 1542sp-1 Irc Tx Rail Firmware: from 2.0, before 2.2.28 (fixed in 2.2.28)
  • Siemens Siplus Et 200sp CP 1543sp-1 Isec Firmware: from 2.0, before 2.2.28 (fixed in 2.2.28)
  • Siemens Siplus Et 200sp CP 1543sp-1 Isec Tx Rail Firmware: from 2.0, before 2.2.28 (fixed in 2.2.28)
  • Siemens Siplus Net CP 1242-7 v2 Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens Siplus Net CP 1543-1 Firmware: before 3.0.22 (fixed in 3.0.22)
  • Siemens Siplus s7-1200 CP 1243-1 Firmware: before 3.3.46 (fixed in 3.3.46)
  • Siemens Siplus s7-1200 CP 1243-1 Rail Firmware: before 3.3.46 (fixed in 3.3.46)

Published 2022-07-12. Last modified 2026-06-17.