CVEvulnerability

CVE-2021-37172

7.5 HIGH Published 2021-08-10 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-287

Description

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.

Affected configurations

• siemens simatic s7-1200 cpu firmware 4.5.0 • siemens simatic step 7 \(tia portal\) (<= 13.0)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References