---
id: "CVE-2026-43853"
kind: "vulnerability"
aliases: ["CVE-2026-43853"]
title: "Crafted message triggers assertion fault and crashes the service"
severity: "high"
cvss: 8.2
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "ADAM-3600 EdgeLink", "fixed": ["2.8.5.0"], "affected": "< 2.8.5.0", "ecosystem": "vendor"}]
ecosystems: []
tags: ["adam-3600", "advantech", "denial-of-service", "edgelink", "firmware", "ics", "other"]
not_affected_if: ["firmware-2.8.5.0-or-later", "network-isolated"]
published_at: "2026-10-20T10:17:06+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T03:34:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43853", "first_seen_at": "2026-10-23T21:57:20+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-25T03:34:01+00:00"}]
---

# Crafted message triggers assertion fault and crashes the service

Advantech ADAM-3600 EdgeLink (industrial remote terminal unit): a crafted network message triggers a reachable assertion (CWE-617) and crashes the service, denying availability. CVSS 4.0 8.2, no privileges needed. Part of a 30-CVE Advantech batch. No known exploitation or public PoC.

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

## Affected

- vendor:ADAM-3600 EdgeLink affected < 2.8.5.0 fixed 2.8.5.0

## How to check

Check the ADAM-3600 firmware version in the device web UI/system info; versions below 2.8.5.0 are affected. Also check whether the device's management/proprietary-protocol ports are reachable from untrusted networks.

## Fix

Upgrade ADAM-3600 firmware to 2.8.5.0 or later (vendor patched 2026-10-15). Note: some other CVEs in the same advisory reference 2.8.5.1 for directory restrictions; the latest release covers both. Until patched, restrict network access to the device.

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-43853
- 2026-10-25T03:34:01+00:00 analyst — Identified as Advantech ADAM-3600 EdgeLink (vendor advisory ACIRT-261001 item 25, NN-2026-0014; CSA SG AL-2026-149). Vendor PDF row text truncated in my read; fixed version 2.8.5.0 comes from CSA-sourced NVD record and secondary trackers, not read in vendor words, so nothing marked verified. No exploitation or PoC found.

## Documents

- [advisory] Advantech: Vulnerabilities Identified in ADAM-3600 (ACIRT-261001) https://advcloudfiles.advantech.com/cms/de8e2d94-10ab-470e-ac6f-d2e5434f4ec4/Security%20Advisory%20PDF%20File/SECURITY-ADVISORY----ADAM-3600.pdf
- [describes] CSA Singapore AL-2026-149: Advantech ADAM-3600 EdgeLink multiple vulnerabilities https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149

## From the sources

A vulnerability could allow an attacker to send a crafted message to trigger an assertion fault, causing the service to crash.

---

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