CVE-2020-15786

Name: CVE-2020-15786
Creator: NVD / NIST
Published: 2020-09-09T19:15:19.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2020-15786 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions < V16), SIMATIC HMI Comfort Panels (incl. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Simatic Hmi Basic Panels 2nd Generation Firmware	<= 14
Siemens	Simatic Hmi Comfort Panels Firmware	All versions
Siemens	Simatic Hmi Mobile Panels Firmware	All versions
Siemens	Simatic Hmi United Comfort Panels Firmware	All versions

References

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

Timeline

Published: Sep 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15786?

How severe is CVE-2020-15786?

CVE-2020-15786 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15786?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15786?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST