Buffer Overflow Vulnerability in Tenda CH22 by Tenda
CVE-2025-12273

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ch22
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12273?

A vulnerability exists in the Tenda CH22 router due to improper handling of user input in the fromwebExcptypemanFilter function located in /goform/webExcptypemanFilter. This weakness can be exploited through crafted requests, leading to a buffer overflow condition. An attacker can execute this manipulation remotely, potentially gaining unauthorized access or control over the device. The exploit is publicly known, and users should apply necessary mitigations.

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-2025-12273 - Proof of Concept

References

https://vuldb.com/?id.329945
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329945
signaturepermissions-required
https://vuldb.com/?submit.674161
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)
JSON
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CVE-2025-12273 : Buffer Overflow Vulnerability in Tenda CH22 by Tenda