CVE-2020-15798

Name: CVE-2020-15798
Creator: NVD / NIST
Published: 2021-02-09T17:15:13.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.18%

Last modified Jun 17, 2026

CVE-2020-15798 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). EPSS estimates a 5.18% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)

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

5.18%

91.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Simatic Hmi Comfort Panels Firmware	< 16.0
Siemens	Simatic Hmi Comfort Panels Firmware	16.0
Siemens	Simatic Hmi Ktp Mobile Panels Firmware	< 16.0
Siemens	Simatic Hmi Ktp Mobile Panels Firmware	16.0
Siemens	Sinamics Gh150 Firmware	All versions
Siemens	Sinamics Gl150 Firmware	All versions
Siemens	Sinamics Gm150 Firmware	All versions
Siemens	Sinamics Sh150 Firmware	All versions
Siemens	Sinamics Sl150 Firmware	All versions
Siemens	Sinamics Sm150 Firmware	All versions
Siemens	Sinamics Sm120 Firmware	All versions
Siemens	Sinamics Sm150i Firmware	All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdfPatch, Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-02Third Party Advisory, US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdfPatch, Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-02Third Party Advisory, US Government Resource

Timeline

Published: Feb 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15798?

How severe is CVE-2020-15798?

CVE-2020-15798 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.18% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15798?

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-2020-15798?

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

Scan your code now

Source: NVD / NIST