Stack-Based Buffer Overflow in TOTOLINK A3300R Router
CVE-2025-12260

8.7HIGH

Key Information:

Vendor

Totolink
Status
A3300r
Vendor
CVE Published:
27 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-12260?

A security issue exists within the TOTOLINK A3300R router that allows for a stack-based buffer overflow via the 'setSyslogCfg' function in the POST Parameter Handler. Malicious actors can exploit this vulnerability remotely by manipulating the 'enable' argument within the affected CGI script, potentially leading to unauthorized access and control over the system. The exploit has been made public, heightening the risk for affected users. It is critical to apply security patches and monitor for unusual activity.

Affected Version(s)

A3300R 17.0.0cu.557_B20221024

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-2025-12260 - Proof of Concept

References

https://vuldb.com/?id.329931
vdb-entrytechnical-description
https://vuldb.com/?ctiid.329931
signaturepermissions-required
https://vuldb.com/?submit.673727
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

yhryhryhr_tutu (VulDB User)
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