Buffer Overflow Vulnerability in Tenda O3V2 Router
CVE-2025-7419

8.7HIGH

Key Information:

Vendor

Tenda
Status
O3v2
Vendor
CVE Published:
10 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7419?

A vulnerability in the Tenda O3V2 router allows for a stack-based buffer overflow due to improper handling of the destIP parameter in the fromSpeedTestSet function within the /goform/setRateTest component. This vulnerability can be exploited remotely, enabling an attacker to manipulate data and potentially execute arbitrary code on the device. Awareness and mitigation strategies are essential for maintaining network security.

Affected Version(s)

O3V2 1.0.0.12(3880)

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-2025-7419 - Proof of Concept

References

https://vuldb.com/?id.315879
vdb-entrytechnical-description
https://vuldb.com/?ctiid.315879
signaturepermissions-required
https://vuldb.com/?submit.608865
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

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CVE-2025-7419 : Buffer Overflow Vulnerability in Tenda O3V2 Router