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CVE record · CVE-2020-28397

Incorrect authorization in Siemens SIMATIC Drive Controller family and others

No CVSS scoreEPSS 0.0075 · 55th percentile

Published by the CVE Program (CNA: siemens) at 10 Aug 2021, 10:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Siemens SIMATIC Drive Controller family
  • affected All versions < V2.9.2
Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
  • affected All versions < V21.9
Siemens SIMATIC S7 PLCSIM Advanced
  • affected All versions > V2 < V4
Siemens SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
  • affected Version V4.4
Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
  • affected All versions > V2.5 < V2.9.2
Siemens SIMATIC S7-1500 Software Controller
  • affected All versions > V2.5 < V21.9
Siemens TIM 1531 IRC (incl. SIPLUS NET variants)
  • affected Version V2.1
Identifiers
CVE-2020-28397
CNA
siemens
Weakness (CWE)
CWE-863
Tags
Published
10 Aug 2021
Updated
4 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS 0.0075, the 55th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 10 Aug 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.