PatchSiren cyber security CVE debrief

CVE-2026-36806 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 webAuthUserPwd parameter of the formModifyWebAuthUser function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.5, indicating a HIGH severity.

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 Shenzhen Tenda Technology Co., Ltd 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 webAuthUserPwd parameter of the formModifyWebAuthUser 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

Update to the latest version of Tenda W15E if available.
Restrict access to the affected device and monitor for suspicious activity.
Implement additional security measures such as firewall rules and intrusion detection systems.

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-2026-36806). The NVD detail can be found at [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-36806).

Official resources

CVE-2026-36806 was published on 2026-06-09T19:17:46.293Z and modified on 2026-06-10T17:16:32.930Z.