Stack-Based Buffer Overflow in Tenda F451 by Tenda
CVE-2026-6122

8.7HIGH

Key Information:

Vendor

Tenda
Status
F451
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6122?

A stack-based buffer overflow vulnerability has been identified in the Tenda F451 router version 1.0.0.7, specifically in the frmL7ProtForm function of the /goform/L7Prot component. Malicious actors may exploit this vulnerability remotely by manipulating the 'page' argument, leading to potential unauthorized access and execution of arbitrary code. The issue has been publicly disclosed, heightening the urgency for affected users to apply necessary updates and security measures.

Affected Version(s)

F451 1.0.0.7

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-2026-6122 - Proof of Concept

References

https://vuldb.com/vuln/356985
vdb-entrytechnical-description
https://vuldb.com/vuln/356985/cti
signaturepermissions-required
https://vuldb.com/submit/792872
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

Jxm666 (VulDB User)
.