Stack-based Buffer Overflow in Tenda F451 Product by Tenda
CVE-2026-6137

8.7HIGH

Key Information:

Vendor

Tenda
Status
F451
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6137?

A security flaw has been identified in the Tenda F451 device version 1.0.0.7_cn_svn7958, specifically within the 'fromAdvSetWan' function located in the '/goform/AdvSetWan' file. This vulnerability allows an attacker to manipulate the 'wanmode' or 'PPPOEPassword' arguments, potentially leading to a stack-based buffer overflow. Given its remote exploitability, the risk is significant, and the exploit has been made publicly available, necessitating immediate action to secure affected systems.

Affected Version(s)

F451 1.0.0.7_cn_svn7958

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-2026-6137 - Proof of Concept

References

https://vuldb.com/vuln/357001
vdb-entrytechnical-description
https://vuldb.com/vuln/357001/cti
signaturepermissions-required
https://vuldb.com/submit/792881
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)
.