---
id: CVE-2023-29377
title: >-
  An issue was discovered in Softing OPC UA C++ SDK through 6.20 and Softing
  Secure Integration Server through 1.22
summary: >-
  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 …
severity: medium
cvss: 6.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-23
vendor: Softing
product: Secure Integration Server
affected:
  - secure_integration_server <= 1.22
published: '2026-09-14'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:56:19.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-29377'
references:
  - url: 'https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-02.html'
    label: cve@mitre.org
  - url: 'https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-02.json'
    label: cve@mitre.org
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-23-1055/'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00485
epssPercentile: 0.39186
zeroDay: true
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T15:07:46.310381Z'
ingestedAt: '2026-09-14T15:23:07.426Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.