How severe is CVE-2022-40227?

CVE-2022-40227 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-40227 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40227?

CVE-2022-40227 primarily affects Siemens Simatic Hmi Comfort Panels Firmware. In total, 58 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-40227?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-40227 published?

CVE-2022-40227 was published on 2022-10-11 and last updated on 2026-06-17.

CVE-2022-40227

CVE-2022-40227 is a high-severity vulnerability in Siemens Simatic Hmi Comfort Panels Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Siemens Simatic Hmi Comfort Panels Firmware
Published: 2022-10-11
Last modified: 2026-06-17

Description

A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V17 Update 4), SIMATIC HMI KTP Mobile Panels (All versions < V17 Update 4), SIMATIC HMI KTP1200 Basic (All versions < V17 Update 5), SIMATIC HMI KTP400 Basic (All versions < V17 Update 5), SIMATIC HMI KTP700 Basic (All versions < V17 Update 5), SIMATIC HMI KTP900 Basic (All versions < V17 Update 5), SIPLUS HMI KTP1200 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP400 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP700 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP900 BASIC (All versions < V17 Update 5). Affected devices do not properly validate input sent to certain services over TCP. This could allow an unauthenticated remote attacker to cause a permanent denial of service condition (requiring a device reboot) by sending specially crafted TCP packets.

Frequently asked questions

What is CVE-2022-40227?: A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V17 Update 4), SIMATIC HMI KTP Mobile Panels (All versions < V17 Update 4), SIMATIC HMI KTP1200 Basic (All versions < V17 Update 5), SIMATIC HMI KTP400 Basic (All versions < V17 Update 5), SIMATIC HMI KTP700 Basic (All versions < V17 Update 5), SIMATIC HMI KTP900 Basic (All versions < V17 Update 5), SIPLUS HMI KTP1200 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP400 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP700 BASIC (All versions < V17 Update 5), SIPLUS HMI KTP900 BASIC (All versions < V17 Update 5). Affected devices do not properly validate input sent to certain services over TCP. This could allow an unauthenticated remote attacker to cause a permanent denial of service condition (requiring a device reboot) by sending specially crafted TCP packets.
How severe is CVE-2022-40227?: CVE-2022-40227 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-40227 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40227?: CVE-2022-40227 primarily affects Siemens Simatic Hmi Comfort Panels Firmware. In total, 58 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-40227?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-40227 published?: CVE-2022-40227 was published on 2022-10-11 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-384224.pdf

Affected products (58)

cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:17.0:update1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_comfort_panels_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp400_basic_firmware:17.0:update4:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp700_basic_firmware:17.0:update4:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp900_basic_firmware:17.0:update4:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp1200_basic_firmware:17.0:update4:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:17.0:-:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:17.0:udpate1:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:17.0:update2:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:17.0:update3:*:*:*:*:*:*
cpe:2.3:o:siemens:siplus_hmi_ktp400_basic_firmware:17.0:update4:*:*:*:*:*:*

More vulnerabilities in Siemens Simatic Hmi Comfort Panels Firmware

CVE-2020-15798 — Critical (CVSS 9.8): A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update…
CVE-2020-15786 — Critical (CVSS 9.8): A vulnerability has been identified in SIMATIC HMI Basic Panels 2nd Generation (incl. SIPLUS variants) (All versions <…
CVE-2019-6572 — Critical (CVSS 9.1): A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1), SIMATIC HMI…
CVE-2018-13814 — High (CVSS 8.8): A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V14), SIMATIC HMI Comfort…
CVE-2018-13813 — High (CVSS 8.1): A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15 Update 4), SIMATIC HMI…
CVE-2019-6568 — High (CVSS 7.5): The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An…

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