PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-36783 Shenzhen Tenda Technology Co., Ltd CVE debrief

CVE-2026-36783 is a HIGH severity vulnerability in Tenda O3 Wireless Router v1.0.0.5(4180). The vulnerability is caused by a stack overflow in the domain parameter of the fromNetToolGet function. This allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request. The vulnerability has a CVSS score of 7.5 and was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-36783).

Vendor
Shenzhen Tenda Technology Co., Ltd
Product
Tenda O3 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

Administrators and users of Tenda O3 Wireless Router v1.0.0.5(4180) should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by a stack overflow in the domain parameter of the fromNetToolGet function in Tenda O3 Wireless Router v1.0.0.5(4180). 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 firmware version if available.
  • Limit access to the router's management interface.
  • Monitor network traffic for suspicious activity.

Evidence notes

The vulnerability was discovered and reported by an unknown source. The CVE record was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-36783) and additional details can be found on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-36783).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-36783 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-36783

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

  • CVE-2026-36783 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-36783

    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.