CVE-2026-11523

Description

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.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

8.8 / 10

CVSS vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Effective score

8.8 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-11523

Linked Threat

CVE-2026-11523 — CVE-2026-11523

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-06-08 16:16:37 UTC

NVD last modified

2026-07-23 07:10:00 UTC

NVD CVSS v3.1

8.8 / 10 HIGH source: cna@vuldb.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability subscore

2.8 / 10

Impact subscore

5.9 / 10

EPSS score

0.0047 (probability of exploitation in next 30 days)

EPSS percentile

37.98% vs all CVEs — higher = more likely to be exploited, as of 2026-07-30

NVD-assigned CWE(s): CWE-119, CWE-121 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-35080

Assigner

VulDB

Published

Jun 8, 2026, 2:45:09 PM

Updated

Jun 8, 2026, 4:36:03 PM

EUVD base score (CVSS 4.0)

8.7 / 10
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

EUVD-reported EPSS

0.4700

Vendors

Tenda

Products

W20E (15.11.0.6)

Aliases

GHSA-pj5q-9vg7-6xmx

ENISA description: 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.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (8)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md tenable:github.com
• https://nvd.nist.gov/vuln/detail/CVE-2026-11523 tenable:nvd.nist.gov
• https://vuldb.com/cve/CVE-2026-11523 tenable:vuldb.com
• https://vuldb.com/submit/836471 tenable:vuldb.com
• https://vuldb.com/vuln/369143 tenable:vuldb.com
• https://vuldb.com/vuln/369143/cti tenable:vuldb.com
• https://www.cve.org/CVERecord?id=CVE-2026-11523 tenable:www.cve.org
• https://www.tenda.com.cn/ tenable:www.tenda.com.cn

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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