CVE-2021-44693: Siemens SIMATIC Et 200 SP Open Controller CPU 1515sp Pc Firmware

Medium severity, CVSS 4.9. EPSS: 0.7% chance of exploitation in the next 30 days.

Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.

Affected products

  • Siemens SIMATIC Et 200 SP Open Controller CPU 1515sp Pc Firmware: affected versions not specified
  • Siemens SIMATIC s7-1200 CPU 1211c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1212c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1212fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1214 Fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1214c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1214fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1215 Fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1215c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1215fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 1217c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1211c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1212c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1212fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1214c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1214fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1215c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1215fc Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1200 CPU 12 1217c Firmware: before 4.6.0 (fixed in 4.6.0)
  • Siemens SIMATIC s7-1500 CPU 1507s F Firmware: before 3.0.1 (fixed in 3.0.1)
  • Siemens SIMATIC s7-1500 CPU 1507s Firmware: before 3.0.1 (fixed in 3.0.1)
  • Siemens SIMATIC s7-1500 CPU 1508s F Firmware: before 3.0.1 (fixed in 3.0.1)
  • Siemens SIMATIC s7-1500 CPU 1508s Firmware: before 3.0.1 (fixed in 3.0.1)
  • Siemens SIMATIC s7-1500 CPU 1510sp-1 Firmware: before 3.0.1 (fixed in 3.0.1)
  • Siemens SIMATIC s7-1500 CPU 1510sp Firmware: before 3.0.1 (fixed in 3.0.1)
  • and 71 more

Published 2022-12-13. Last modified 2026-06-17.