Missing Authentication in TOTOLINK A720R Product
CVE-2025-4268

6.9MEDIUM

Key Information:

Vendor
Totolink
Status
A720r
Vendor
CVE Published:
5 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A vulnerability exists in the TOTOLINK A720R router, specifically within the CGI component /cgi-bin/cstecgi.cgi, which fails to properly authenticate requests. By manipulating the argument 'topicurl' with the input 'RebootSystem', an attacker could bypass authentication, enabling unauthorized access. This vulnerability can be exploited remotely, allowing attackers to initiate malicious actions without needing valid credentials. As the details of this exploit have been made public, it is crucial for users and administrators to implement proper security measures to mitigate potential risks.

Affected Version(s)

A720R 4.1.5cu.374

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-2025-4268 - Proof of Concept

References

https://vuldb.com/?id.307372
vdb-entrytechnical-description
https://vuldb.com/?ctiid.307372
signaturepermissions-required
https://vuldb.com/?submit.563429
third-party-advisory

CVSS V4

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

153528990 (VulDB User)
.
CVE-2025-4268 : Missing Authentication in TOTOLINK A720R Product | SecurityVulnerability.io