CVE-2025-40805Network attack vector

Unauthenticated impersonation via API authentication bypass

Published Jan 13, 2026 · Updated Jan 13, 2026

Authorization bypass in Siemens Industrial Edge devices allows remote attackers to impersonate legitimate users through API requests. Specific API endpoints fail to enforce user authentication, but Siemens has not identified the endpoints or disclosed the faulty authorization logic. Exploitation requires prior knowledge of a legitimate user's identity and grants that user's device-facing privileges without credentials.

CVSS severity10.0
Critical
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Siemens Industrial Edge devices allows remote attackers to impersonate legitimate users through API requests. Specific API endpoints fail to enforce user authentication, but Siemens has not identified the endpoints or disclosed the faulty authorization logic. Exploitation requires prior knowledge of a legitimate user's identity and grants that user's device-facing privileges without credentials.

The record

CVE
CVE-2025-40805
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Siemens
Product
SIMATIC HMI MTP2200 Comfort Pro for stand (expandable, flange at the bottom)
Classifications
CWE-639, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SIMATIC HMI MTP2200 Comfort Pro for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC HMI MTP1000, Unified Comfort Panel neutralversion=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SCALANCE LPE9413version=0 <V2.2
Siemens · SIMATIC HMI MTP700 Unified Comfort Panelversion=0 <V21
Siemens · SCALANCE LPE9433 Industrial Edge integrated in SCALANCE XRH334version=0 <V2.2
Siemens · SIMATIC Automation Workstation 24"version=0 <*
Siemens · Industrial Edge Device Kit - arm64version=0 <*; version=0 <V1.24.2; version=0 <V1.25.1
Siemens · SIMATIC HMI MTP1200 Comfort Pro neutral design for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC HMI MTP2200 Comfort Pro for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP1000 Unified Comfort Panelversion=0 <V21
Siemens · SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC IPC227E Industrial Edge Deviceversion=0 <V3.1
Siemens · SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP700, Unified Comfort Panel neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1500 Comfort Pro for support arm (not extendable, flange on top)version=0 <V21
Siemens · Industrial Edge Device Kit - x86-64version=0 <*; version=0 <V1.24.2; version=0 <V1.25.1
Siemens · SIMATIC HMI MTP1900 Unified Comfort Panel neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1500 Unified Comfort Panel hygienic neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP2200 Unified Comfort Hygienic neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1200 Unified Comfort Panelversion=0 <V21
Siemens · SIMATIC HMI MTP1500 Unified Comfort Panel neutral designversion=0 <V21
Siemens · SIPLUS HMI MTP1000 Unified Comfortversion=0 <V21
Siemens · SIMATIC IPC127E Industrial Edge Deviceversion=0 <V3.1
Siemens · SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1200 Unified Comfort Panel hygienicversion=0 <V21
Siemens · Industrial Edge Virtual Deviceversion=0 <V1.24.2
Siemens · SIMATIC HMI MTP1900 Unified Comfort Panel hygienic neutral designversion=0 <V21
Siemens · SIMATIC IPC427E Industrial Edge Deviceversion=0 <V3.1
Siemens · SIMATIC HMI MTP2200 Comfort Pro neutral design for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC HMI MTP1900 Unified Comfort Panel hygienicversion=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP1500 Comfort Pro for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIPLUS HMI MTP1200 Unified Comfortversion=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1200 Unified Comfort Panel hygienic neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP2200 Comfort Pro for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1500 Comfort Pro for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP1500 Comfort Pro neutral design for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC IPC BX-39A Industrial Edge Deviceversion=0 <V3.1
Siemens · Industrial Edge Own Deviceversion=0 <V1.24.2
Siemens · SIMATIC IPC227G Industrial Edge Deviceversion=0 <V3.1
Siemens · SIMATIC HMI MTP1500 Unified Comfort Panelversion=0 <V21
Siemens · Industrial Edge Cloud Deviceversion=0 <V1.24.2
Siemens · SIMATIC HMI MTP1500 Unified Comfort Panel hygienicversion=0 <V21
Siemens · SIMATIC Automation Workstation 19"version=0 <*
Siemens · SIMATIC HMI MTP1900 Unified Comfort Panelversion=0 <V21
Siemens · SIMATIC HMI MTP1000 Unified Comfort Panel hygienicversion=0 <V21
Siemens · SIMATIC HMI MTP700 Unified Comfort Panel hygienic neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP2200 Unified Comfort Panel neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1200 Unified Comfort Panel neutral designversion=0 <V21
Siemens · SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro neutral design for stand (expandable, flange at the bottom)version=0 <V21
Siemens · SIMATIC IPC BX-59A Industrial Edge Deviceversion=0 <V3.1
Siemens · SIPLUS HMI MTP700 Unified Comfortversion=0 <V21
Siemens · SIMATIC HMI MTP2200 Unified Comfort Panelversion=0 <V21
Siemens · SIMATIC HMI MTP2200 Unified Comfort Hygienicversion=0 <V21
Siemens · SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (not extendable, flange on top)version=0 <V21
Siemens · SIMATIC IPC847E Industrial Edge Deviceversion=0 <V3.1
Siemens · SIMATIC IOT2050version=0 <V1.25.1
Siemens · SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (expandable, round tube) and extension unitversion=0 <V21
Siemens · SIMATIC HMI MTP1900 Comfort Pro for stand (expandable, flange at the bottom)version=0 <V21

Published CVSS scores

10.0Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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