# CVE-2026-43857: Advantech ADAM-3600 EdgeLink arbitrary code execution via proprietary protocol

Source: https://junglewise.ai/threats/cve-2026-43857-a-vulnerability-could-allow-a-remote-authenticated-attacker-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-43857 · Severity: info · Published 2026-10-20

Advantech ADAM-3600 EdgeLink is a remote terminal unit used for industrial data acquisition and remote monitoring. CVE-2026-43857 allows an authenticated attacker to execute arbitrary code with elevated privileges on the device, potentially compromising critical industrial infrastructure and enabling data theft or system disruption.

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-2026-43857 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43857 being exploited in the wild.

**How severe is CVE-2026-43857?** Informational severity, published 20 October 2026.

**Which products and versions are affected?** Advantech ADAM-3600 EdgeLink <UNKNOWN>.

**Is there a fix for CVE-2026-43857?** 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-2026-43857 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-43857?** 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 vulnerability in an unspecified component of ADAM-3600 EdgeLink allows authenticated attackers to execute arbitrary code with privileges on the service. The vulnerability is reachable over the network and requires valid authentication credentials, but no user interaction is needed. The attack leads to privilege escalation and full system compromise.

## Affected products

- Advantech ADAM-3600 EdgeLink <UNKNOWN>

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.advantech.com/en/security-advisory](https://www.advantech.com/en/security-advisory)
- [https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149](https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149)

## 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 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)
- [Advantech ADAM-3600 EdgeLink denial of service via assertion fault](https://junglewise.ai/threats/cve-2026-43853-a-vulnerability-could-allow-an-attacker-to-send-a-crafted-message)