---
id: CVE-2026-43855
title: >-
  A heap-based buffer overflow vulnerability could allow a remote authenticated
  attacker to achieve arbitrary code execution.
summary: >-
  A heap-based buffer overflow vulnerability could allow a remote authenticated
  attacker to achieve arbitrary code execution.
severity: high
cvss: 7.5
cvssVector: 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
vendor: Advantech
product: ADAM-3600
affected:
  - ADAM-3600 prior to version 2.8.5.0
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T09:14:17.583Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43855'
references:
  - url: 'https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149'
  - url: 'https://www.advantech.com/en/security-advisory'
tags:
  - cve.org
ingestedAt: '2026-10-20T12:05:07.349Z'
---

## Overview

A heap-based buffer overflow vulnerability could allow a remote authenticated attacker to achieve arbitrary code execution.

## Affected

- `ADAM-3600 prior to version 2.8.5.0`

## Remediation

Advantech has released a security update to address these vulnerabilities. Users and administrators of affected product versions are advised to update to the latest version immediately.