Buffer Overflow Vulnerability in TOTOLINK A3002R and A3002RU Products
CVE-2025-6337

8.7HIGH

Key Information:

Vendor

Totolink
Status
A3002r
A3002ru
Vendor
CVE Published:
20 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6337?

A vulnerability exists in the TOTOLINK A3002R and A3002RU routers, specifically within the HTTP POST Request Handler component, which can be exploited via manipulation of the 'submit-url' parameter. This flaw results in a buffer overflow condition that can be triggered remotely, potentially allowing an attacker to execute arbitrary code or perform unauthorized actions on the affected devices. Users are urged to take precautionary measures to mitigate any threats related to this exposure.

Affected Version(s)

A3002R 3.0.0-B20230809.1615

A3002R 4.0.0-B20230531.1404

A3002RU 3.0.0-B20230809.1615

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-2025-6337 - Proof of Concept

References

https://vuldb.com/?id.313333
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313333
signaturepermissions-required
https://vuldb.com/?submit.596691
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

YeLeipeng_ (VulDB User)
.
CVE-2025-6337 : Buffer Overflow Vulnerability in TOTOLINK A3002R and A3002RU Products