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CVE record · CVE-2020-15786

Unlimited authentication attempts in Siemens SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) and others

CVSS 9.8 CriticalCriticalEPSS 0.015 · 73rd percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: siemens) at 9 Sept 2020, 18:11 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 HMI Basic Panels 2nd Generation (incl. SIPLUS variants)
  • affected All versions < V16
Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
  • affected All versions <= V16
Siemens SIMATIC HMI Mobile Panels
  • affected All versions <= V16
Siemens SIMATIC HMI Unified Comfort Panels
  • affected All versions <= V16
Identifiers
CVE-2020-15786
CNA
siemens
Weakness (CWE)
CWE-307
Tags
Published
9 Sept 2020
Updated
2 Jun 2026

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

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ADP (CISA-ADP)
  • CISA KEV Not listed.
  • EPSS 0.015, the 73rd 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 9 Sept 2020. 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.