Quick answers
- Is CVE-2026-36801 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-36801 being exploited in the wild.
- How severe is CVE-2026-36801?
- Informational severity, with a CVSS score of 7.5, published 9 June 2026.
- Which products and versions are affected?
- Tenda G0 v15.11.0.5.
- Is there a fix for CVE-2026-36801?
- 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-2026-36801 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-36801?
- Check whether you run Tenda G0 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 G0 router firmware version v15.11.0.5. The vulnerability is located within the formIPMacBindAdd function, where the user-supplied HTTP parameter 'IPMacBindRule' is retrieved via websGetVar and subsequently passed to the ipMacBindListStore function. Inside ipMacBindListStore, the input is processed using an unsafe strcpy() call into a fixed-size stack buffer (acStack_11a20) without length validation. A remote attacker can exploit this by sending a crafted HTTP request with an oversized IPMacBindRule string, leading to a process crash or device instability (Denial of Service). The vulnerable path is reportedly reachable without complex preconditions.
Affected products
- Tenda G0 v15.11.0.5
Timeline
- 2026-03-17: other: CVE request submitted to MITRE
- 2026-06-06: disclosed: Public disclosure
- 2026-06-09: advisory: NVD published date