Quick answers
- Is CVE-2026-43842 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43842 being exploited in the wild.
- How severe is CVE-2026-43842?
- Informational severity, published 20 October 2026.
- Which products and versions are affected?
- Advantech ADAM-3600 EdgeLink.
- Is there a fix for CVE-2026-43842?
- 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-2026-43842 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-43842?
- Check whether you run Advantech ADAM-3600 EdgeLink. 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
The vulnerability is a NULL pointer dereference in the license manager service's rpc_rx_fsm function, triggered when msglen is set to 0. An unauthenticated attacker can exploit this via a network attack vector to cause a denial of service by crashing the license manager service. No authentication or user interaction is required.
Affected products
- Advantech ADAM-3600 EdgeLink
Timeline
- 2026-10-20: disclosed