# CVE-2026-43829: Advantech ADAM-3600 EdgeLink stack buffer overflow in password functionality

Source: https://junglewise.ai/threats/cve-2026-43829-advantech-adam-3600-edgelink-stack-buffer-overflow-in-password  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-31. Updated: 2026-07-31  
License: CC BY 4.0 with a link back

CVE-2026-43829 · Severity: info · CVSS 9.2 · Published 2026-07-31

Advantech ADAM-3600 EdgeLink, a gateway device used in industrial automation to connect field equipment to the cloud, contains a critical security flaw. An unauthenticated attacker can exploit a weakness in the password handling system to take full control of the device. This could lead to unauthorized access to industrial processes, data theft, or disruption of operations.

Technologies: [Advantech ADAM-3600 EdgeLink](https://junglewise.ai/threats/technologies/adam-3600-edgelink). Vendors: [Advantech](https://junglewise.ai/threats/vendors/advantech).

## Quick answers

**Is CVE-2026-43829 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43829 being exploited in the wild.

**How severe is CVE-2026-43829?** Informational severity, with a CVSS score of 9.2, published 31 July 2026.

**Which products and versions are affected?** Advantech ADAM-3600 EdgeLink prior to version 2.8.5.1.

**Is there a fix for CVE-2026-43829?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-43829 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-43829?** Check whether you run Advantech ADAM-3600 EdgeLink at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow exists in the password processing logic of Advantech ADAM-3600 EdgeLink. The vulnerability is triggered when the 'SafeEnhancement' feature is enabled and can be exploited by an unauthenticated attacker via the network. Successful exploitation allows for remote code execution (RCE) on the device. The issue is addressed in version 2.8.5.1 and later. The CVSS 4.0 score of 9.2 reflects high impact on confidentiality, integrity, and availability, though the attack complexity is rated as high.

## Affected products

- Advantech ADAM-3600 EdgeLink prior to version 2.8.5.1

## Timeline

- 2026-07-31: advisory: NVD publication date
- 2026-07-31: disclosed: Initial disclosure by CSA Singapore

## References

- [https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-097](https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-097)

## Related threats

- [Advantech ADAM-3600 EdgeLink stack-based buffer overflow in login](https://junglewise.ai/threats/cve-2026-43858-a-stack-based-buffer-overflow-vulnerability-could-allow-a-remote)
- [Advantech ADAM-3600 EdgeLink arbitrary code execution via proprietary protocol](https://junglewise.ai/threats/cve-2026-43857-a-vulnerability-could-allow-a-remote-authenticated-attacker-to)
- [Advantech ADAM-3600 stack-based buffer overflow in FileProcess CheckDir](https://junglewise.ai/threats/cve-2026-43856-a-stack-based-buffer-overflow-vulnerability-in-the-fileprocess)
- [Advantech ADAM-3600 EdgeLink heap buffer overflow remote authenticated code execution](https://junglewise.ai/threats/cve-2026-43855-a-heap-based-buffer-overflow-vulnerability-could-allow-a-remote)
- [Advantech ADAM-3600 EdgeLink sensitive data exposure in project files](https://junglewise.ai/threats/cve-2026-43854-a-vulnerability-could-allow-an-attacker-with-access-to-an)