Buffer Overflow Vulnerability in Tenda O3 Router
CVE-2025-12212

8.7HIGH

Key Information:

Vendor

Tenda
Status
O3
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12212?

A vulnerability has been detected in the Tenda O3 router version 1.0.0.10(2478) that allows for a stack-based buffer overflow through the SetValue/GetValue functions. By manipulating the 'upnpEn' argument in the '/goform/setNetworkService' file, an attacker can execute a remote exploit. This publicly available exploit poses a significant risk, enabling unauthorized access or potential system compromise.

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Affected Version(s)

O3 1.0.0.10(2478)

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-2025-12212 - Proof of Concept

References

https://vuldb.com/?id.329882
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329882
signaturepermissions-required
https://vuldb.com/?submit.673267
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

wxhwxhwxh_ (VulDB User)
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