Buffer Overflow Vulnerability in Tenda F456 Devices
CVE-2026-7079

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7079?

A buffer overflow vulnerability has been discovered in the Tenda F456 router, specifically within the fromAdvSetWan function of the httpd component. This vulnerability arises from improper handling of the wanmode argument, allowing an attacker to manipulate the input and potentially execute arbitrary code. The attack can be initiated remotely, making it critical for users to ensure their devices are up-to-date and to implement necessary security measures. As the exploit details are publicly available, it presents a significant threat to affected systems.

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-2026-7079 - Proof of Concept

References

https://vuldb.com/vuln/359654
vdb-entrytechnical-description
https://vuldb.com/vuln/359654/cti
signaturepermissions-required
https://vuldb.com/submit/798461
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

LtzHust (VulDB User)
.