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PatchSiren cyber security CVE debrief

CVE-2026-36771 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 formwrlSSIDset function. This issue allows attackers to cause a Denial of Service (DoS) via crafted input. 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 v1.0.0.3(2204)
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

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 formwrlSSIDset function. This can be exploited by attackers to cause a Denial of Service (DoS).

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 the system for suspicious activity.

Evidence notes

The vulnerability was discovered in the wild and reported to CVE.org.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-36771 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-36771

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-36771 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-36771

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.