Buffer Overflow Vulnerability in Tenda F456 Product
CVE-2026-7055

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7055?

A security vulnerability has been identified in the Tenda F456 router, specifically in the handling of the 'fromVirtualSer' function within the httpd service. This vulnerability arises due to improper manipulation of the 'menufacturer/Go' argument, which can lead to a buffer overflow condition. Exploitation of this flaw allows remote attackers to potentially gain unauthorized access to sensitive functions of the device. The issue was publicly disclosed, underscoring the importance of addressing this vulnerability to safeguard against possible attacks.

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-2026-7055 - Proof of Concept

References

https://vuldb.com/vuln/359628
vdb-entrytechnical-description
https://vuldb.com/vuln/359628/cti
signaturepermissions-required
https://vuldb.com/submit/798457
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

LtzHuster2 (VulDB User)
.