CVE-2021-27386

high-risk
Published 2021-05-12

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.

Do I need to act?

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0.44% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Simatic Wincc Runtime Advanced
Simatic Wincc Runtime Advanced
Simatic Wincc Runtime Advanced
Simatic Wincc Runtime Advanced
Simatic Wincc Runtime Advanced
Sinamics Sh150 Firmware
Sinamics Sm150I Firmware
Sinamics Gh150 Firmware
Sinamics Gl150 Firmware
Sinamics Gm150 Firmware
Sinamics Sl150 Firmware
Sinamics Sm120 Firmware
Sinamics Sm150 Firmware
Simatic Hmi Comfort Outdoor Panels 7\" Firmware
Simatic Hmi Comfort Outdoor Panels 7\" Firmware
Simatic Hmi Comfort Outdoor Panels 7\" Firmware
Simatic Hmi Comfort Outdoor Panels 7\" Firmware
Simatic Hmi Comfort Outdoor Panels 7\" Firmware
Simatic Hmi Comfort Outdoor Panels 15\" Firmware
Simatic Hmi Comfort Outdoor Panels 15\" Firmware

Affected Vendors

59
/ 100
high-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 31/34 · Critical