Buffer Overflow Vulnerability in Tenda CH22 by Tenda
CVE-2025-11117

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
28 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11117?

A vulnerability exists in the Tenda CH22 router version 1.0.0.1, specifically in the function formWrlExtraGet within the /goform/GstDhcpSetSer file. This security flaw arises from improper handling of input parameters, leading to a buffer overflow condition. Attackers may exploit this vulnerability remotely, enabling potential malicious activities. The issue has been disclosed to the public, raising concerns for users of the affected device. It is recommended that users update their firmware to mitigate the risk associated with this vulnerability.

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-2025-11117 - Proof of Concept

References

https://vuldb.com/?id.326198
vdb-entrytechnical-description
https://vuldb.com/?ctiid.326198
signaturepermissions-required
https://vuldb.com/?submit.662927
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

yszhao (VulDB User)
JSON
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CVE-2025-11117 : Buffer Overflow Vulnerability in Tenda CH22 by Tenda