Buffer Overflow Vulnerability in Tenda CH22 Router
CVE-2025-12265

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12265?

A vulnerability has been detected in the Tenda CH22 router (version 1.0.0.1), specifically within the fromVirtualSer function found in the /goform/VirtualSer file. This issue allows for the manipulation of the argument page, resulting in a buffer overflow that can be exploited remotely. As this exploit is publicly available, it heightens the risk to devices running the affected software, necessitating immediate attention to bolster security measures.

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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-2025-12265 - Proof of Concept

References

https://vuldb.com/?id.329936
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329936
signaturepermissions-required
https://vuldb.com/?submit.674012
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

hhsw34 (VulDB User)
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