Quick answers
- Is CVE-2026-10206 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-10206 being exploited in the wild.
- How severe is CVE-2026-10206?
- High severity, with a CVSS score of 8.8, published 1 June 2026.
- Which products and versions are affected?
- D-Link DI-8400 up to 16.07.26A1.
- Is there a fix for CVE-2026-10206?
- 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-2026-10206 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-10206?
- Check whether you run D-Link DI-8400 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 D-Link DI-8400 router firmware up to version 16.07.26A1. The flaw is located within the handling of HTTP POST requests to /dbsrv.asp, specifically involving the 'str' (or 'src') parameter. The application uses the unsafe 'strcpy' function to copy user-supplied input into a fixed-size stack buffer without performing adequate bounds checking. A remote attacker with low-level authentication (or potentially unauthenticated depending on session state) can exploit this to overwrite the return address on the stack, leading to arbitrary command execution or a denial of service (DoS). A public proof-of-concept exploit is available.
Affected products
- D-Link DI-8400 up to 16.07.26A1
Timeline
- 2026-05-31: disclosed: Initial disclosure via VulDB and GitHub repository
- 2026-06-01: advisory: CVE-2026-10206 published