CVE-2021-27384
A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7\" & 15\" (incl....
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 an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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 an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.
- Record
CVE-2021-27384- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-788
- Updated
- 2026-11-02
CVE List
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 an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.
- Record
CVE-2021-27384- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-788
- Updated
- 2026-11-02
EUVDEUVD-2021-14139
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 an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.
- Record
EUVD-2021-14139- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8885-fhqr-37cx
A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7\" & 15\" (incl....
A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced (All versions < V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.
- Record
GHSA-8885-fhqr-37cx- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-788
- Updated
- 2026-11-02
Affected products
- siemens simatic hmi comfort outdoor panels v15 7\" & 15\" (incl. siplus variants)
- siemens simatic hmi comfort outdoor panels v16 7\" & 15\" (incl. siplus variants)
- siemens simatic hmi comfort panels v15 4\" - 22\" (incl. siplus variants)
- siemens simatic hmi comfort panels v16 4\" - 22\" (incl. siplus variants)
- siemens simatic hmi ktp mobile panels v15 ktp400f, ktp700, ktp700f, ktp900 and ktp900f
- siemens simatic hmi ktp mobile panels v16 ktp400f, ktp700, ktp700f, ktp900 and ktp900f
- siemens simatic wincc runtime advanced v15
- siemens simatic wincc runtime advanced v16
- siemens simatic wincc runtime advanced
- siemens sinamics gh150
- siemens sinamics gl150 (with option x30)
- siemens sinamics gm150 (with option x30)
Show 22 moreShow less
- siemens sinamics sh150
- siemens sinamics sl150
- siemens sinamics sm120
- siemens sinamics sm150
- siemens sinamics sm150i
- siemens simatic hmi comfort outdoor panels 15\" firmware
- siemens simatic hmi comfort outdoor panels 7\" firmware
- siemens simatic hmi comfort panels 22\" firmware
- siemens simatic hmi comfort panels 4\" firmware
- siemens simatic hmi ktp mobile panels ktp400f firmware
- siemens simatic hmi ktp mobile panels ktp700 firmware
- siemens simatic hmi ktp mobile panels ktp700f firmware
- siemens simatic hmi ktp mobile panels ktp900 firmware
- siemens simatic hmi ktp mobile panels ktp900f firmware
- siemens sinamics gh150 firmware
- siemens sinamics gl150 firmware
- siemens sinamics gm150 firmware
- siemens sinamics sh150 firmware
- siemens sinamics sl150 firmware
- siemens sinamics sm120 firmware
- siemens sinamics sm150 firmware
- siemens sinamics sm150i firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27384 is a critical vulnerability (CVSS 9.8) in Siemens Simatic Hmi Comfort Outdoor Panels V15 7\" & 15\" (incl. Siplus Variants), published May 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.61%, the 85th percentile. No source names a fixed version.