Advantech ADAM-3600: Authentication bypass in password reset mechanism
Summary
Advantech ADAM-3600 is an industrial remote terminal unit (RTU) used for data acquisition and remote monitoring. A flaw in the password reset mechanism allows an attacker to bypass authentication over the network, without credentials or user interaction. The CNA rates the vulnerability as critical (CVSS v4.0 9.2), with high impact on confidentiality, integrity and availability of the device.
Affected
- ADAM-3600 (EdgeLink firmware) prior to version 2.8.5.0
- Default configuration: unaffected (according to the CVE record)
Fixed in
- Update to firmware version 2.8.5.0 or later, as published by Advantech in advisory ACIRT-261001
- Verify on Advantech's download page before rollout: the 2.8.5.0 image is reported as labelled Beta, and the newest Release build is reported as affected (third-party analysis, not confirmed by the vendor)
Workaround
- No vendor workaround documented in the sources reviewed.
- Interim measure (third-party recommendation, not confirmed by the vendor): restrict network access to affected devices until the firmware update is applied, especially for devices reachable from business networks, VPN pools or public cellular IP addresses.
- If no patch can be applied, contact Advantech directly.
Exploitation
- No evidence of active exploitation found.
- Not listed in the CISA KEV catalogue.
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
- VulDB reports no available exploit; no public proof of concept found.
Our recommendation
- Check whether ADAM-3600 devices are in use and whether they are reachable from untrusted networks, including remote access and cellular links.
- Treat the device as critical if it is reachable from any untrusted network.
- Restrict access to management interfaces now and update to firmware 2.8.5.0 after verifying the Beta-label issue.
- Patch the whole firmware, since other unauthenticated and authenticated flaws in the same product are covered by the same advisory.
- Monitor the device for unexpected logins, configuration changes and service crashes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Advantech Security Advisories www.advantech.com
- CSA Singapore Alert AL-2026-149 www.csa.gov.sg
- Advantech Security Advisory PDF ADAM-3600 advcloudfiles.advantech.com
- VulDB CVE-2026-43845 entry vuldb.com
- OpenCVE CVE-2026-43845 app.opencve.io
- Safeguard analysis of ADAM-3600 CVEs safeguard.sh
- SecurityOnline ADAM-3600 vulnerabilities securityonline.info
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 04:13.
Original description (NVD)
A vulnerability in the password reset mechanism could allow an attacker to bypass the authentication mechanism.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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