Stack-Based Buffer Overflow in Tenda FH1201 Router
CVE-2025-7551

8.7HIGH

Key Information:

Vendor

Tenda
Status
Fh1201
Vendor
CVE Published:
14 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7551?

A stack-based buffer overflow vulnerability was identified in the Tenda FH1201 router, specifically in the function fromPptpUserAdd within the /goform/PPTPDClient file. This flaw arises from improper handling of the modino/username argument, which allows attackers to exploit the vulnerability remotely. The exploit has been publicly disclosed, raising significant security concerns for users of this router model.

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Affected Version(s)

FH1201 1.2.0.14(408)

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-2025-7551 - Proof of Concept

References

https://vuldb.com/?id.316249
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316249
signaturepermissions-required
https://vuldb.com/?submit.614975
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

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