Is CVE-2026-36800 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-36800 being exploited in the wild.

How severe is CVE-2026-36800?

Informational severity, with a CVSS score of 7.5, published 9 June 2026.

Is there a fix for CVE-2026-36800?

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-2026-36800 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-36800?

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.

CVE-2026-36800: Tenda G0 buffer overflow in formIPMacBindDel

CVE-2026-36800 · Severity: info · CVSS 7.5 · Published 2026-06-09

The Tenda G0 router, a networking device used for internet connectivity, contains a security flaw in its web management interface. By sending a specially crafted web request, an attacker can crash the device or cause it to become unstable. This results in a denial of service, disrupting internet access and network operations for all connected users.

Technologies: Tenda G0. Vendors: Tenda.

Quick answers

Is CVE-2026-36800 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-36800 being exploited in the wild.
How severe is CVE-2026-36800?: 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-2026-36800?: 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-2026-36800 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-36800?: 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, specifically within the formIPMacBindDel function of the web management interface. The vulnerability is triggered when the 'IPMacBindIndex' HTTP parameter, retrieved via websGetVar, is passed to a strcpy function without proper bounds checking. An unauthenticated remote attacker can exploit this by sending a crafted HTTP request containing an excessively long string in the affected parameter. Successful exploitation leads to a process crash or device instability, resulting in a Denial of Service (DoS). The issue is confirmed in firmware version v15.11.0.5.

Affected products

Tenda (Shenzhen Tenda Technology Co., Ltd) G0 v15.11.0.5

Timeline

2026-03-17: other: CVE request submitted to MITRE
2026-06-06: disclosed: Public disclosure of vulnerability details
2026-06-09: advisory: NVD published the CVE record

References

https://github.com/xhh0124/SemVulLLM/tree/main/G0/formIPMacBindDel

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