8.8
CVSSv3

CVE-2021-31894

Published: 13/07/2021 Updated: 10/08/2022
CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9
CVSS v3 Base Score: 8.8 | Impact Score: 6 | Exploitability Score: 2
VMScore: 641
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Summary

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and previous versions (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.

Vulnerability Trend

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siemens simatic_pcs_7_firmware

siemens simatic_pcs_7_firmware 9.0

siemens simatic_pdm_firmware -

siemens simatic_step_7_firmware

siemens sinamics_starter_firmware

siemens sinamics_starter_firmware 5.4