Buffer Overflow Vulnerability in Tenda F451 by Tenda
CVE-2026-6632

8.7HIGH

Key Information:

Vendor

Tenda
Status
F451
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6632?

A vulnerability exists in the Tenda F451 router affecting the SafeClientFilter functionality. Specifically, the fromSafeClientFilter function located in /goform/SafeClientFilter is susceptible to a buffer overflow due to improper handling of the 'menufacturer/Go' argument. This vulnerability permits remote exploitation, with a publicly available proof of concept that could be invoked by malicious actors. Users of the affected version should take immediate action to secure their devices.

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-2026-6632 - Proof of Concept

References

https://vuldb.com/vuln/358266
vdb-entrytechnical-description
https://vuldb.com/vuln/358266/cti
signaturepermissions-required
https://vuldb.com/submit/792905
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

jimi666 (VulDB User)
.