Quick answers
- Is CVE-2026-36772 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-36772 being exploited in the wild.
- How severe is CVE-2026-36772?
- Informational severity, with a CVSS score of 7.5, published 9 June 2026.
- Which products and versions are affected?
- Tenda W3 Wireless Router v1.0.0.3(2204).
- Is there a fix for CVE-2026-36772?
- 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-2026-36772 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-36772?
- Check whether you run Tenda W3 Wireless Router 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 Tenda W3 Wireless Router v1.0.0.3(2204) within the 'formwrlSSIDget' CGI handler. The vulnerability is located in the 'formwrlSSIDget' function where user-controlled input from the 'index' parameter is passed to 'sprintf' without length validation to construct a configuration key. While the 'wl_radio' parameter must be set to '0' to reach the vulnerable branch, the 'index' parameter can be manipulated to overflow the 'local_c14' stack buffer. An unauthenticated attacker can exploit this over the network via a crafted HTTP request to cause a crash or reboot (Denial of Service), and potentially achieve arbitrary code execution.
Affected products
- Tenda W3 Wireless Router v1.0.0.3(2204)
Timeline
- 2026-03-04: other: CVE request submitted to MITRE
- 2026-06-06: disclosed: Public disclosure
- 2026-06-09: advisory: NVD published date