CVE-2026-67967

Received Received - Intake

Buffer Overflow in Tenda W20E Router Firmware

Publication date: 2026-08-17

Last updated on: 2026-08-18

Assigner: MITRE

Description

Buffer Overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code. This is an incomplete fix for CVE-2025-44867 and CVE-2026-36819

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-17

Last Modified

2026-08-18

Generated

2026-09-07

AI Q&A

2026-08-18

EPSS Evaluated

2026-09-05

NVD

CVE-2026-67967

Affected Vendors & Products

Vendor	Product	Version / Range
tenda	w20e	16.01.0.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

Buffer Overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code. This is an incomplete fix for CVE-2025-44867 and CVE-2026-36819.

Detection Guidance

This vulnerability is specific to Tenda W20E devices running firmware V16.01.0.6(2782). Detection requires checking device firmware versions and network traffic patterns. Use network scanning tools like Nmap to identify Tenda W20E devices and verify their firmware versions. Inspect device configurations for signs of buffer overflow attempts or arbitrary code execution.

Impact Analysis

An attacker could exploit this to execute arbitrary code on the affected device, potentially gaining control over it or causing system crashes.

Compliance Impact

This vulnerability, a buffer overflow in Tenda W20E, could lead to arbitrary code execution, potentially compromising data confidentiality and integrity. Such risks may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) if exploited, as unauthorized access or data breaches could occur.

Mitigation Strategies

Immediately update the Tenda W20E firmware to the latest version to address the incomplete fix for CVE-2025-44867 and CVE-2026-36819. Isolate the device from critical network segments if updates are not immediately available.

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