CVE-2023-46590Network attack vector

Unauthenticated file disclosure via external XML entities

Published Nov 14, 2023 · Updated Dec 16, 2025

XXE injection in Siemens OPC UA Modelling Editor before 2.8 allows remote attackers to read arbitrary local files through crafted XML. The XML-processing path resolves attacker-supplied external entity declarations; Siemens does not disclose the parser or function involved. No authentication or user interaction is required, and the reported consequence is file disclosure without data modification or service interruption.

CVSS severity7.5
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

XXE injection in Siemens OPC UA Modelling Editor before 2.8 allows remote attackers to read arbitrary local files through crafted XML. The XML-processing path resolves attacker-supplied external entity declarations; Siemens does not disclose the parser or function involved. No authentication or user interaction is required, and the reported consequence is file disclosure without data modification or service interruption.

The record

CVE
CVE-2023-46590
Published
Nov 14, 2023
Updated
Dec 16, 2025
Vendor
Siemens
Product
Siemens OPC UA Modelling Editor (SiOME)
Classifications
CWE-611, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=All versions < V2.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · Siemens OPC UA Modelling Editor (SiOME)version=All versions < V2.8

Published CVSS scores

7.5Siemens AGCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo