Buffer Overflow Vulnerability in Tenda F456 Router
CVE-2026-7098

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7098?

A critical security vulnerability has been identified in the Tenda F456 router version 1.0.0.5, specifically in the fromDhcpListClient function within the /goform/DhcpListClient component. This vulnerability allows remote attackers to manipulate the arguments passed to the function, leading to a buffer overflow condition. Such exploits can potentially enable unauthorized access or control over affected systems. Given the vulnerability's public disclosure, it is imperative that users mitigate risks by applying necessary security patches and monitoring for unusual activity.

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-2026-7098 - Proof of Concept

References

https://vuldb.com/vuln/359673
vdb-entrytechnical-description
https://vuldb.com/vuln/359673/cti
signaturepermissions-required
https://vuldb.com/submit/798471
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)
.