---
id: "CVE-2026-43857"
kind: "vulnerability"
aliases: ["CVE-2026-43857"]
title: "Authenticated remote attacker can run code with service privileges"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "ADAM-3600", "fixed": ["2.8.5.0"], "affected": "< 2.8.5.0", "ecosystem": "vendor"}]
ecosystems: []
tags: ["adam-3600", "advantech", "ics", "ot", "other", "rce"]
not_affected_if: ["auth-required"]
published_at: "2026-10-20T10:17:06+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-24T00:14:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43857", "first_seen_at": "2026-10-23T21:57:20+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-24T00:14:57+00:00"}]
---

# Authenticated remote attacker can run code with service privileges

Advantech ADAM-3600 EdgeLink (industrial remote terminal unit) has a flaw that lets a remote, authenticated attacker run arbitrary code with the privileges of the service. It is one of about 30 CVEs fixed in Advantech advisory ACIRT-261001. Reported by Nozomi Networks researchers. No exploitation or public PoC known.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:ADAM-3600 affected < 2.8.5.0 fixed 2.8.5.0

## How to check

Check the ADAM-3600 firmware version in the device web UI or management interface; versions below 2.8.5.0 are affected. Also check whether the device management/web service is reachable from untrusted networks.

## Fix

Update ADAM-3600 firmware to 2.8.5.0 or later (per the CVE record, versions prior to 2.8.5.0 are affected; get the update from Advantech, advisory ACIRT-261001). Until then, restrict network access to the device and limit the accounts that can log in.

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-43857
- 2026-10-24T00:14:57+00:00 analyst — Identified via CVE.org record and CSA AL-2026-149: Advantech ADAM-3600 EdgeLink RTU, affected prior to 2.8.5.0, vendor advisory ACIRT-261001 (2026-10-15). Not read: Advantech advisory body (listing only), so exact fixed build is inferred as 2.8.5.0. No exploitation or PoC found; no X search done.

## Documents

- [advisory] CSA Singapore AL-2026-149: Advantech ADAM-3600 EdgeLink multiple vulnerabilities https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149/
- [advisory] Advantech Security Advisories (ACIRT-261001, ADAM-3600) https://www.advantech.com/en-us/security-advisory
- [describes] CVE Record CVE-2026-43857 https://www.cve.org/CVERecord?id=CVE-2026-43857

## From the sources

A vulnerability could allow a remote authenticated attacker to achieve arbitrary code execution with privileges on the service.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_