Buffer Overflow Vulnerability in Tenda F456 Router
CVE-2026-7029

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7029?

A buffer overflow vulnerability has been discovered in the Tenda F456 router version 1.0.0.5. This flaw resides in the fromaddressNat function located in the /goform/addressNat file. An attacker can exploit this vulnerability remotely by manipulating the argument 'menufacturer/Go', potentially leading to unauthorized actions or denial of service. Given the public availability of this exploit, it poses a significant threat to users of the Tenda F456 router, making prompt remediation essential.

Affected Version(s)

F456 1.0.0.5

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-2026-7029 - Proof of Concept

References

https://vuldb.com/vuln/359609
vdb-entrytechnical-description
https://vuldb.com/vuln/359609/cti
signaturepermissions-required
https://vuldb.com/submit/798450
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

LtzHust2 (VulDB User)
.