CVE-2025-26389Network attack vector

Unauthenticated root code execution via exportDiagramPage parameters

Published May 13, 2025 · Updated May 13, 2025

OS command injection in Siemens OZW672 and OZW772 Web Servers before 8.0 allows remote attackers to execute code as root. The web service fails to sanitize parameters supplied to the exportDiagramPage endpoint before operating-system command processing. No authentication or user interaction is required; successful exploitation grants full control of the embedded appliance and can affect connected building-automation operations.

CVSS severity10.0
Critical
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Siemens OZW672 and OZW772 Web Servers before 8.0 allows remote attackers to execute code as root. The web service fails to sanitize parameters supplied to the exportDiagramPage endpoint before operating-system command processing. No authentication or user interaction is required; successful exploitation grants full control of the embedded appliance and can affect connected building-automation operations.

The record

CVE
CVE-2025-26389
Published
May 13, 2025
Updated
May 13, 2025
Vendor
Siemens
Product
OZW672 Web Server
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. May 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <V8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · OZW672 Web Serverversion=0 <V8.0
Siemens · OZW772 Web Serverversion=0 <V8.0

Published CVSS scores

10.0Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0Siemens AGCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A: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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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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