Buffer Overflow Vulnerability in Tenda W3 Router
CVE-2026-4007

8.7HIGH

Key Information:

Vendor

Tenda
Status
W3
Vendor
CVE Published:
12 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4007?

A remote code execution vulnerability has been identified in the Tenda W3 router, specifically within the POST Parameter Handler in the '/goform/wifiSSIDget' file. An attacker can exploit this vulnerability by manipulating the 'index' argument, leading to a stack-based buffer overflow. Once executed, this could allow unauthorized access, posing significant risks to the device's security. The exploit details are now publicly available, emphasizing the urgency for users to mitigate the potential impact.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

W3 1.0.0.3(2204)

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-4007 - Proof of Concept

References

https://vuldb.com/?id.350530
vdb-entrytechnical-description
https://vuldb.com/?ctiid.350530
signaturepermissions-required
https://vuldb.com/?submit.769181
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Svigo_o (VulDB User)
JSON
.