Vulnerable Assets Library

A searchable database of maritime OT equipment with known vulnerabilities — covering navigation systems, engine automation, power management, and vessel control CBS from major marine vendors. Search by vendor, product family, or CVE ID to check whether equipment on your vessel has documented vulnerabilities requiring attention or patch management action.

Searchable by vendor CVE referenced Marine OT vendors Continuously updated

Audit Level: Tactical

Records optimised: 01.07.2026 16:57 UTC

CVE-2021-37204 — Siemens: SIMATIC Drive Controller family

Published: 2022-02-09 | Updated: 2025-04-18

HIGH 7.5

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 PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions = V21.9 < V21.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 Ready4Linux (All versions), 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 packet over port 102/tcp. A restart of the affected device is needed to restore normal operations.

CVSS VECTOR: 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

NVD Record ↗ | Vendor Advisory / Fix ↗

← Back to full Vulnerable Assets Library

Get new CVE entries like these in your inbox weekly. Subscribe →

Disclaimer & Methodology

The Marine OT Vulnerable Assets Library is a curated repository of security advisories identified through automated heuristic filtering. Users should verify hardware revisions with manufacturers before patching.