CVE-2020-15798

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-09 · updated 2026-06-17
Weakness: CWE-306

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)

Affected products

Siemens Simatic Hmi Comfort Panels Firmware: before 16.0; 16.0, 16.0-update1, 16.0-update2, 16.0-update3 — fixed in 16.0
Siemens Simatic Hmi Ktp Mobile Panels Firmware: before 16.0; 16.0, 16.0-update1, 16.0-update2, 16.0-update3 — fixed in 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 Sm120 Firmware: all versions
Siemens Sinamics Sm150 Firmware: all versions
Siemens Sinamics Sm150I Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Simatic Hmi Comfort Panels Firmware 16.0; Siemens Simatic Hmi Ktp Mobile Panels Firmware 16.0. Check the vendor advisory for mitigations.

References

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