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CVE-2026-90689 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

A security flaw has been discovered in Tenda W20E 15.11.0.61068_1546_841_CN_TDC. Impacted is the function formDelWebAuthWhiteUser. Performing a manipulation of the argument webAuthWhiteUserIndex results in stack-based buffer overflow. The attack can be initiated remotely.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CNA: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/Tenda/W20E/formDelWebAuthWhiteUser/README.md	[email protected]	Technical Description
https://vuldb.com/cve/CVE-2026-90689	[email protected]	Permission Required
https://vuldb.com/submit/914981	[email protected]	Permission Required
https://vuldb.com/vuln/403222	[email protected]	Permission Required
https://vuldb.com/vuln/403222/cti	[email protected]	Content Wall
https://www.tenda.com.cn/	[email protected]	Vendor

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]
CWE-121	Stack-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
Tenda W20E	V15.11.0.61068
CPE cpe:2.3:h:tenda:w20e:::::::: cpe:2.3:o:tenda:w20e_firmware:::::::: Remediation Workaround:low effort Do not use the vulnerable formDelWebAuthWhiteUser function.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 14, 2026	CVE Modified	CISA-ADP
Sep 14, 2026	New CVE Received	[email protected]