CVE-2020-15786

State: Published
Severity: 9.8 Critical
Published: Sep 9, 2020
Updated: Jun 2, 2026
Reserved: Jul 15, 2020

Description

A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions < V16), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions <= V16), SIMATIC HMI Mobile Panels (All versions <= V16), SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently block excessive authentication attempts. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-307 Improper Restriction of Excessive Authentication Attempts

Affected Products

Product	Versions
SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants)Siemens	All versions < V16Affected
SIMATIC HMI Comfort Panels (incl. SIPLUS variants)Siemens	All versions <= V16Affected
SIMATIC HMI Mobile PanelsSiemens	All versions <= V16Affected
SIMATIC HMI Unified Comfort PanelsSiemens	All versions <= V16Affected

References

https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf

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