Buffer Overflow Vulnerability in Tenda F456 by Tenda
CVE-2026-7054

8.7HIGH

Key Information:

Vendor

Tenda
Status
F456
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7054?

A vulnerability has been discovered in the Tenda F456 1.0.0.5 model, specifically in the PPTPDClient component's fromPptpUserAdd function, located in the /goform/PPTPDClient file. This weakness allows for a buffer overflow due to improper handling of the opttype and username arguments. An attacker can exploit this vulnerability remotely, making it particularly dangerous as exploits have already been released publicly, facilitating potential 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-2026-7054 - Proof of Concept

References

https://vuldb.com/vuln/359627
vdb-entrytechnical-description
https://vuldb.com/vuln/359627/cti
signaturepermissions-required
https://vuldb.com/submit/798456
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)
.