Improper Access Controls in TOTOLINK A3700R Password Handler
CVE-2025-3663

6.9MEDIUM

Key Information:

Vendor
Totolink
Status
A3700r
Vendor
CVE Published:
16 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A vulnerability has been identified in the TOTOLINK A3700R, specifically within the Password Handler component's functionality for setWiFiEasyCfg and setWiFiEasyGuestCfg. This flaw allows attackers to manipulate access controls, potentially enabling unauthorized remote access to sensitive features of the device. Despite an early disclosure of this issue to the vendor, no response has been received, leading to concerns regarding the security posture of affected users. Exploiting this vulnerability may pose significant risks to the configuration and management of the device.

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-2025-3663 - Proof of Concept

References

https://vuldb.com/?id.304841
vdb-entrytechnical-description
https://vuldb.com/?ctiid.304841
signaturepermissions-required
https://vuldb.com/?submit.551295
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)
.