Buffer Overflow Vulnerability in TOTOLINK A702R HTTP POST Handler
CVE-2025-6147

8.7HIGH

Key Information:

Vendor

Totolink

Status
Vendor
CVE Published:
17 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6147?

A critical vulnerability has been identified in the TOTOLINK A702R, specifically in the HTTP POST Request Handler located in the /boafrm/formSysLog file. This vulnerability allows an attacker to manipulate the 'submit-url' argument, leading to a buffer overflow condition that can be exploited remotely. Given its public disclosure, organizations utilizing this product should assess their exposure and implement necessary security measures to mitigate potential exploits.

Affected Version(s)

A702R 4.0.0-B20230721.1521

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.

References

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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