CVE-2021-27386

HIGH

SIMATIC HMI - Buffer Overflow

Title source: llm

Description

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4), 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). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition.

Scores

CVSS v3 7.5
EPSS 0.0044
EPSS Percentile 62.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE
CWE-401
Status published

Affected Products (50)

siemens/sinamics_gh150_firmware
siemens/simatic_wincc_runtime_advanced < 16
siemens/simatic_wincc_runtime_advanced
siemens/simatic_wincc_runtime_advanced
siemens/simatic_wincc_runtime_advanced
siemens/simatic_wincc_runtime_advanced
siemens/sinamics_sh150_firmware
siemens/sinamics_sm150i_firmware
siemens/sinamics_gl150_firmware
siemens/sinamics_gm150_firmware
siemens/sinamics_sl150_firmware
siemens/sinamics_sm120_firmware
siemens/sinamics_sm150_firmware
siemens/simatic_hmi_comfort_outdoor_panels_7\"_firmware < 16
siemens/simatic_hmi_comfort_outdoor_panels_7\"_firmware
... and 35 more

Timeline

Published May 12, 2021
Tracked Since Feb 18, 2026