Vulnerability record · CVE-2026-11523 · published 8 June 2026

CVE-2026-11523: Memory buffer overflow vulnerability

A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.

7.4 CVSS 4.0 High EPSS 0.47% · top 62.1% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred

7.4CVSS 4.0 base score, v2 9.0

0.47%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

7References

23 Jul 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md
https://vuldb.com/cve/CVE-2026-11523
https://vuldb.com/submit/836471
https://vuldb.com/vuln/369143
https://vuldb.com/vuln/369143/cti
https://www.tenda.com.cn/
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md

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Source: NIST National Vulnerability Database (record CVE-2026-11523), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.