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Fencer Vulns
critical 9.8

CVE-2020-15798 json

A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl.

published 2021-02-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7781

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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)

Patch / fix

  • siemens simatic_hmi_comfort_panels_firmware 16.0
  • siemens simatic_hmi_ktp_mobile_panels_firmware 16.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-131-13 updated cvss 8.1

Siemens SINAMICS Medium Voltage Products Telnet (Update A)

  • Siemens SINAMICS GH150 Siemens SINAMICS GL150 (with option X30) Siemens SINAMICS GM150 (with option X30) Siemens SINAMICS SH150 Siemens SINAMICS SL150 Siemens SINAMICS SM120
    +2 more products
    Siemens SINAMICS SM150 Siemens SINAMICS SM150i
    affected: vendor fix support.industry.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

cisa ICSA-21-033-02 updated cvss 8.1

Siemens SIMATIC HMI Comfort Panels & SIMATIC HMI KTP Mobile Panels

  • Siemens SIMATIC HMI Comfort Panels (incl.'SIPLUS variants) <V16_Update_3a Siemens SIMATIC HMI KTP Mobile Panels <V16_Update_3a
    affected: fixed in V16, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
5 mo ago

Exploit prediction

5.26% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
  • Siemens SIMATIC HMI KTP Mobile Panels
  • Siemens SINAMICS GH150
  • Siemens SINAMICS GL150 (with option X30)
  • Siemens SINAMICS GM150 (with option X30)
  • Siemens SINAMICS SH150
  • Siemens SINAMICS SL150
  • Siemens SINAMICS SM120
  • Siemens SINAMICS SM150
  • Siemens SINAMICS SM150i

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.