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PatchSiren cyber security CVE debrief

CVE-2026-36809 Shenzhen Tenda Technology Co., Ltd CVE debrief

A buffer overflow vulnerability was discovered in Shenzhen Tenda Technology Co., Ltd Tenda W15E v15.11.0.10. The vulnerability is located in the webAuthWhiteID parameter of the formModifyWebAuthWhiteUser function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request. The vulnerability has a CVSS score of 7.5 and a severity of HIGH.

Vendor
Shenzhen Tenda Technology Co., Ltd
Product
Tenda W15E
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

Administrators and users of Tenda W15E v15.11.0.10 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by a buffer overflow in the webAuthWhiteID parameter of the formModifyWebAuthWhiteUser function. This allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

Defensive priority

HIGH

Recommended defensive actions

  • Update to the latest version of Tenda W15E if available.
  • Limit access to the affected system.
  • Monitor network traffic for suspicious activity.

Evidence notes

The vulnerability was discovered and reported by an unknown source. The CVE record was published on 2026-06-09T19:17:46.650Z and modified on 2026-06-10T20:17:08.157Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-36809 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-36809

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

  • CVE-2026-36809 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-36809

    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.