AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-37185

HIGH · CVSS 7.5 EPSS 2.06%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-02-09 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2021-37185
Severity
HIGH
CVSS
7.5
EPSS
2.06%

Original NVD 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.