PatchSiren cyber security CVE debrief

CVE-2026-36793 Shenzhen Tenda Technology Co., Ltd CVE debrief

A vulnerability was discovered in Shenzhen Tenda Technology Co., Ltd Tenda W3 Wireless Router v1.0.0.3(2204). The formwrlSSIDset function contains multiple stack overflows via the mit_ssid and mis_ssid_index parameters. These vulnerabilities allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

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 precautions.

Technical summary

The vulnerability has a CVSS score of 7.5 and a HIGH severity. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Defensive priority

HIGH

Recommended defensive actions

Apply patches or updates provided by the vendor to fix the vulnerability.
Limit access to the affected system to trusted users only.
Monitor network traffic for suspicious activity.

Evidence notes

The vulnerability was reported via [ref-4](https://github.com/xhh0124/SemVulLLM/tree/main/W3/FUN_00442b44).

Official resources

CVE-2026-36793 was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-36793) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-36793).