Buffer Overflow Vulnerability in Tenda F456 Routers
CVE-2026-7057

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7057?

A vulnerability has been identified in the Tenda F456 router firmware version 1.0.0.5, which resides within a specific function of the httpd component. By manipulating the parameters 'funcname' and 'funcpara1', an attacker can trigger a buffer overflow remotely. This vulnerability poses a significant risk as it can be exploited to launch unauthorized actions against the device. It is crucial for users to update their firmware and apply necessary security measures to mitigate potential threats. Details and exploits related to this vulnerability have been publicly available.

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-2026-7057 - Proof of Concept

References

https://vuldb.com/vuln/359630
vdb-entrytechnical-description
https://vuldb.com/vuln/359630/cti
signaturepermissions-required
https://vuldb.com/submit/798459
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)
.