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CVE Record

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

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.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This Siemens HMI issue can let an unauthenticated network attacker crash affected operator panels until they are rebooted. The main business risk is loss of visibility or control at human-machine interfaces in industrial environments, not data theft.

Executive priority

Prioritize within OT maintenance planning, especially for exposed or poorly segmented HMI networks. This is not a confidentiality breach, but it can interrupt plant operations by forcing affected panels offline until rebooted.

Technical view

CVE-2022-40227 is CWE-20 improper input validation in certain TCP services on specified SIMATIC and SIPLUS HMI panels. Network access, low complexity, no privileges, and no user interaction are required. Impact is availability only, with CVSS 3.1 score 7.5.

Likely exposure

Exposure is most likely where affected Siemens HMI Comfort, KTP Mobile, KTP Basic, or SIPLUS KTP Basic panels run below the listed V17 update levels and have TCP services reachable from untrusted or weakly segmented networks.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The vulnerability is still operationally serious because the CVSS vector indicates unauthenticated remote denial of service over the network with low attack complexity.

Researcher notes

Evidence supports unauthenticated remote availability impact and affected product/version ranges. No source in the bundle confirms exploitation in the wild. Avoid assuming broader Siemens products are affected beyond the listed SIMATIC and SIPLUS HMI panels.

Mitigation direction

  • Review Siemens SSA-384224 for the current vendor remediation guidance.
  • Upgrade Comfort and KTP Mobile panels to V17 Update 4 or later where applicable.
  • Upgrade KTP Basic and SIPLUS KTP Basic panels to V17 Update 5 or later where applicable.
  • Restrict network access to HMI TCP services to trusted industrial management paths.
  • Plan reboot procedures for affected HMIs until remediation is complete.

Validation and detection

  • Inventory SIMATIC and SIPLUS HMI panel models and firmware or TIA Portal image versions.
  • Compare installed versions against the affected version thresholds in the CVE record.
  • Confirm whether HMI TCP services are reachable from non-OT or untrusted networks.
  • Verify Siemens advisory SSA-384224 for model-specific update availability and constraints.
  • Document any unpatched panels and compensating network controls.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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cve · low confidence lookup

CVE-2022-40227 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2022-40227Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
SiemensSIMATIC HMI Comfort Panels (incl. SIPLUS variants)All versions < V17 Update 4Listed
SiemensSIMATIC HMI KTP Mobile PanelsAll versions < V17 Update 4Listed
SiemensSIMATIC HMI KTP1200 BasicAll versions < V17 Update 5Listed
SiemensSIMATIC HMI KTP400 BasicAll versions < V17 Update 5Listed
SiemensSIMATIC HMI KTP700 BasicAll versions < V17 Update 5Listed
SiemensSIMATIC HMI KTP900 BasicAll versions < V17 Update 5Listed
SiemensSIPLUS HMI KTP1200 BASICAll versions < V17 Update 5Listed
SiemensSIPLUS HMI KTP400 BASICAll versions < V17 Update 5Listed
SiemensSIPLUS HMI KTP700 BASICAll versions < V17 Update 5Listed
SiemensSIPLUS HMI KTP900 BASICAll versions < V17 Update 5Listed
Weakness

CWE details

CWE-20

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.