# Improper input validation in Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants) and others

CVE record · `CVE-2022-40227`

- **Identifiers:** `CVE-2022-40227`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** siemens
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html)
- **Tags:** [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md)
- **Technologies:** [Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)](https://agentprime.io/advisories/technology/siemens-simatic-hmi-comfort-panels-incl-siplus-variants.md) · [Siemens SIMATIC HMI KTP Mobile Panels](https://agentprime.io/advisories/technology/siemens-simatic-hmi-ktp-mobile-panels.md) · [Siemens SIMATIC HMI KTP1200 Basic](https://agentprime.io/advisories/technology/siemens-simatic-hmi-ktp1200-basic.md) · [Siemens SIMATIC HMI KTP400 Basic](https://agentprime.io/advisories/technology/siemens-simatic-hmi-ktp400-basic.md) · [Siemens SIMATIC HMI KTP700 Basic](https://agentprime.io/advisories/technology/siemens-simatic-hmi-ktp700-basic.md) · [Siemens SIMATIC HMI KTP900 Basic](https://agentprime.io/advisories/technology/siemens-simatic-hmi-ktp900-basic.md) · [Siemens SIPLUS HMI KTP1200 BASIC](https://agentprime.io/advisories/technology/siemens-siplus-hmi-ktp1200-basic.md) · [Siemens SIPLUS HMI KTP400 BASIC](https://agentprime.io/advisories/technology/siemens-siplus-hmi-ktp400-basic.md) · [Siemens SIPLUS HMI KTP700 BASIC](https://agentprime.io/advisories/technology/siemens-siplus-hmi-ktp700-basic.md) · [Siemens SIPLUS HMI KTP900 BASIC](https://agentprime.io/advisories/technology/siemens-siplus-hmi-ktp900-basic.md)
- **Published:** 11 Oct 2022
- **Updated:** 2 Jun 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: siemens) at 11 Oct 2022, 00:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

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

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from ADP (CISA-ADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0092, the 60th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Oct 2022. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2022-40227](https://www.cve.org/CVERecord?id=CVE-2022-40227)
- [NVD: CVE-2022-40227](https://nvd.nist.gov/vuln/detail/CVE-2022-40227)

### References from the CNA

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

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2022-40227>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2022-40227/>. Everything for agents: <https://agentprime.io/llms.txt>.