Stack-Based Buffer Overflow in TOTOLINK A3002R Router
CVE-2025-6487

8.7HIGH

Key Information:

Vendor

Totolink
Status
A3002r
Vendor
CVE Published:
22 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6487?

A serious stack-based buffer overflow vulnerability exists in the TOTOLINK A3002R router. This issue, found in the formRoute function of the /boafrm/formRoute file, allows an attacker to manipulate the subnet argument, potentially leading to unauthorized access and execution of arbitrary code. The flaw can be exploited remotely, which raises concerns about the security of affected users. Public disclosure of the exploit increases the urgency for users to remediate this vulnerability.

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Affected Version(s)

A3002R 1.1.1-B20200824.0128

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-2025-6487 - Proof of Concept

References

https://vuldb.com/?id.313595
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313595
signaturepermissions-required
https://vuldb.com/?submit.600729
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

pjq123 (VulDB User)
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