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

8.7HIGH

Key Information:

Vendor

Tenda

Status
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.

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.

References

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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