PatchSiren cyber security CVE debrief

CVE-2026-36792 Shenzhen Tenda Technology Co., Ltd CVE debrief

A stack overflow vulnerability was discovered in the Tenda W3 Wireless Router v1.0.0.3(2204) in the wl_radio parameter of the formWifiRadioSet function. This issue allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Vendor: Shenzhen Tenda Technology Co., Ltd
Product: Tenda W3 Wireless Router
CVSS: HIGH 7.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-09
Original CVE updated: 2026-06-10
Advisory published: 2026-06-09
Advisory updated: 2026-06-10

Who should care

Users of Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204) should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability is caused by a stack overflow in the wl_radio parameter of the formWifiRadioSet function. This can be exploited by sending a crafted HTTP request to the affected device, leading to a Denial of Service (DoS).

Defensive priority

HIGH

Recommended defensive actions

Apply patches or updates provided by the vendor to fix the vulnerability.
Restrict access to the affected device to only trusted networks and users.
Monitor device logs for suspicious activity.

Evidence notes

The vulnerability was discovered and reported by an unknown source. The CVE record was published on 2026-06-09T19:17:44.690Z and last modified on 2026-06-10T19:16:35.013Z.

Official resources

Public