CVE-2020-15783

CVE-2020-15783

Vendor Siemens
Product SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Weakness CWE-400
Published November 12, 2020
Last update June 2, 2026

CVSS base score

What the vulnerability does

01Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

Key dates

02Disclosure timeline

November 12, 2020 CVE published
June 2, 2026 Record updated