Stack-Based Buffer Overflow in Tenda CH22 Router
CVE-2025-5685

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
5 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5685?

A vulnerability has been identified in the Tenda CH22 router model 1.0.0.1, associated with the formNatlimit function in the /goform/Natlimit file. An attacker can manipulate the 'page' argument to induce a stack-based buffer overflow, which can be exploited remotely. This flaw poses a significant risk as it allows unauthorized remote access and potential execution of arbitrary code, emphasizing the need for immediate remedial action to secure affected devices.

Affected Version(s)

CH22 1.0.0.1

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-2025-5685 - Proof of Concept

References

https://vuldb.com/?id.311169
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311169
signaturepermissions-required
https://vuldb.com/?submit.590153
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

xubeining (VulDB User)
.
CVE-2025-5685 : Stack-Based Buffer Overflow in Tenda CH22 Router