Buffer Overflow Vulnerability in Tenda F451 Router
CVE-2026-6630

8.7HIGH

Key Information:

Vendor

Tenda
Status
F451
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6630?

A buffer overflow vulnerability exists in the Tenda F451 router due to improper handling of the 'dips' argument in the fromGstDhcpSetSer function within the httpd component. Attackers can exploit this vulnerability remotely, which may lead to unauthorized access and manipulation of the affected router. The exploit has been publicly disclosed, emphasizing the need for immediate security measures.

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-2026-6630 - Proof of Concept

References

https://vuldb.com/vuln/358264
vdb-entrytechnical-description
https://vuldb.com/vuln/358264/cti
signaturepermissions-required
https://vuldb.com/submit/792882
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)
.