---
id: CVE-2026-85479
title: >-
  The STTP-based data publisher on openPDC accepts network connections without
  authentication in its default configuration
summary: >-
  The STTP-based data publisher on openPDC accepts network connections without
  authentication in its default configuration. An unauthenticated network
  attacker can connect to this interface and exchange data with it.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-306
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T16:41:53.540'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85479'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-02.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-02'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
ingestedAt: '2026-10-09T15:00:31.367Z'
---

## Overview

The STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and exchange data with it.

## Remediation

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