---
id: CVE-2026-100730
title: >-
  A service console interface on openPDC and openHistorian deserializes a
  client-supplied data structure
summary: >-
  A service console interface on openPDC and openHistorian deserializes a
  client-supplied data structure. On systems using Windows Authentication, an
  attacker must already be authenticated to reach this function; on systems
  without Windows…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
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-2026-100730'
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: '2026-10-09T15:00:31.363Z'
---

## Overview

A service console interface on openPDC and openHistorian deserializes a client-supplied data structure. On systems using Windows Authentication, an attacker must already be authenticated to reach this function; on systems without Windows Authentication, this is reachable by an unauthenticated network attacker. This allows an attacker to trigger deserialization of an arbitrary object graph, which could allow remote code execution under the privileges of the affected service account.

## Remediation

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