Quick answers
- Is CVE-2026-43833 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43833 being exploited in the wild.
- How severe is CVE-2026-43833?
- Informational severity, with a CVSS score of 7.5, published 31 July 2026.
- Which products and versions are affected?
- Advantech EdgeLink prior to version 2.8.5.1.
- Is there a fix for CVE-2026-43833?
- 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-2026-43833 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-43833?
- Check whether you run Advantech 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 exists in the upload functionality of Advantech ADAM-3600 EdgeLink. The flaw is triggered when the application fails to properly validate the length of input data during file upload operations. An authenticated attacker with high privileges can exploit this by sending a specially crafted request to the device over the network. Successful exploitation allows for arbitrary code execution on the underlying operating system. The vulnerability is addressed in version 2.8.5.1 and later.
Affected products
- Advantech ADAM-3600 EdgeLink prior to version 2.8.5.1
Timeline
- 2026-07-31: disclosed
- 2026-07-31: advisory