CVE-2021-37185
- State
- Published
- Severity
- 7.5 High
- Published
- Feb 9, 2022
- Updated
- Apr 18, 2025
- Reserved
- Jul 21, 2021
Description
A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C | siemens |
Weaknesses
- CWE-672 Operation on a Resource after Expiration or Release
Affected Products
| Product | Versions |
|---|---|
SIMATIC Drive Controller familySiemens |
|
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)Siemens |
|
SIMATIC S7-1200 CPU family (incl. SIPLUS variants)Siemens |
|
SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)Siemens |
|
SIMATIC S7-1500 Software ControllerSiemens |
|
SIMATIC S7-PLCSIM AdvancedSiemens |
|
SIPLUS TIM 1531 IRCSiemens |
|
TIM 1531 IRCSiemens |
|
References
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