Improper Access Control in TOTOLINK A3700R Router
CVE-2025-3674

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 router, specifically in the setUrlFilterRules function located in the /cgi-bin/cstecgi.cgi file. This issue permits attackers to manipulate access controls improperly, allowing unauthorized access to sensitive functionalities. The flaw can be exploited remotely, potentially compromising the device's security. Public disclosure of this vulnerability raises concerns about its exploitation in real-world scenarios. Users are urged to ensure their devices are updated to mitigate potential risks.

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-2025-3674 - Proof of Concept

References

https://vuldb.com/?id.304963
vdb-entrytechnical-description
https://vuldb.com/?ctiid.304963
signaturepermissions-required
https://vuldb.com/?submit.551302
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_tu (VulDB User)
.