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CVE-2026-36791 Shenzhen Tenda Technology Co., Ltd CVE debrief

A vulnerability was discovered in Shenzhen Tenda Technology Co., Ltd Tenda O3v3 v1.0.0.5. The stack overflow occurs in the save_list_data parameter of the formSetCfm function, allowing attackers to cause a Denial of Service (DoS) via a crafted HTTP request. This vulnerability has a CVSS score of 7.5 and a severity of HIGH.

Vendor
Shenzhen Tenda Technology Co., Ltd
Product
Tenda O3v3
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 Shenzhen Tenda Technology Co., Ltd Tenda O3v3 v1.0.0.5 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 save_list_data parameter of the formSetCfm function. This can be exploited by sending a crafted HTTP request to the affected device, potentially 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 network traffic and system logs for suspicious activity.

Evidence notes

The vulnerability was discovered and reported by an unknown source. The CVE record was published on 2026-06-09T19:17:44.570Z and last modified on 2026-06-10T18:16:45.237Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-36791 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-36791

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

  • CVE-2026-36791 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-36791

    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.