CVE-2021-37172

CVE-2021-37172

Vendor Siemens
Product SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
Weakness CWE-287 · Improper authentication
Published August 10, 2021
Last update August 4, 2024

CVSS base score

What the vulnerability does

01Description

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.

Key dates

02Disclosure timeline

August 10, 2021 CVE published
August 4, 2024 Record updated