Buffer Overflow Vulnerability in Tenda CH22 Router
CVE-2025-12234

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12234?

A critical buffer overflow vulnerability exists in the Tenda CH22 1.0.0.1 router, specifically within the SafeMacFilter function of the /goform/SafeMacFilter file. This flaw arises from improper handling of input arguments, allowing an attacker to execute a remote exploit. Once the vulnerability is exploited, it could lead to unauthorized access and control over the affected system. The issue has been publicly disclosed, increasing the risk of exploitation by malicious entities. It is essential for Tenda users to remain vigilant and update their devices to mitigate potential threats.

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-2025-12234 - Proof of Concept

References

https://vuldb.com/?id.329904
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329904
signaturepermissions-required
https://vuldb.com/?submit.673718
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

LINXI666 (VulDB User)
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