What is CVE-2020-28397?

CVE-2020-28397 is a medium-severity vulnerability in Siemens Cpu_1211c, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2021-08-10.

How severe is CVE-2020-28397?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Siemens Cpu_1211c

CVE-2020-28397

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 <…

Vulnerability class: Broken Access Control

EPSS: 0.008 (50.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Siemens Cpu_1211c
Siemens Cpu_1211c_firmware — versions 4.4
Siemens Cpu_1212c
Siemens Cpu_1212c_firmware — versions 4.4
Siemens Cpu_1212fc
Siemens Cpu_1212fc_firmware — versions 4.4
Siemens Cpu_1214c
Siemens Cpu_1214c_firmware — versions 4.4
Siemens Cpu_1214fc
Siemens Cpu_1214fc_firmware — versions 4.4

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

productcert@siemens.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-28397?: CVE-2020-28397 is a medium-severity vulnerability in Siemens Cpu_1211c, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2021-08-10.
How severe is CVE-2020-28397?: Medium severity. CVSS v3 base score is 5.3 out of 10.