8.8
CVE-2021-31894
- EPSS 0.03%
- Published 13.07.2021 11:15:09
- Last modified 21.11.2024 06:06:27
- Source productcert@siemens.com
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A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (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.
Data is provided by the National Vulnerability Database (NVD)
Siemens ≫ Simatic Pcs 7 Firmware Version <= 8.2
Siemens ≫ Simatic Pcs 7 Firmware Version9.0
Siemens ≫ Simatic Pdm Firmware Version-
Siemens ≫ Simatic Step 7 Firmware Version >= 5.0 < 5.7
Siemens ≫ Sinamics Starter Firmware Version < 5.4
Siemens ≫ Sinamics Starter Firmware Version5.4 Update-
Siemens ≫ Sinamics Starter Firmware Version5.4 Updatehf1
Siemens ≫ Sinamics Starter Firmware Version5.4 Updatehf2
Siemens ≫ Sinamics Starter Firmware Version5.4 Updatesp1
Siemens ≫ Sinamics Starter Firmware Version5.4 Updatesp1_hf1
Siemens ≫ Sinamics Starter Firmware Version5.4 Updatesp2
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.03% | 0.063 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 8.8 | 2 | 6 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
|
| nvd@nist.gov | 7.2 | 3.9 | 10 |
AV:L/AC:L/Au:N/C:C/I:C/A:C
|
CWE-732 Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.