Improper Access Control Vulnerability in TOTOLINK A3700R Router
CVE-2025-3664

6.9MEDIUM

Key Information:

Vendor
Totolink
Status
A3700r
Vendor
CVE Published:
16 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A vulnerability in the TOTOLINK A3700R router was identified, specifically in the function setWiFiEasyGuestCfg within the cgi-bin/cstecgi.cgi file. This flaw allows unauthorized access due to improper access controls, potentially enabling remote attackers to exploit the system. The issue was made public without a response from the vendor, increasing its risk as it may be actively exploited. It is crucial for users to be aware of this vulnerability and take necessary precautions to protect their systems.

Affected Version(s)

A3700R 9.1.2u.5822_B20200513

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-2025-3664 - Proof of Concept

References

https://vuldb.com/?id.304842
vdb-entrytechnical-description
https://vuldb.com/?ctiid.304842
signaturepermissions-required
https://vuldb.com/?submit.551296
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
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

yhryhryhr (VulDB User)
.