Buffer Overflow Vulnerability in TOTOLINK EX1200T HTTP POST Request Handler
CVE-2025-6143

8.7HIGH

Key Information:

Vendor

Totolink
Status
Ex1200t
Vendor
CVE Published:
16 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6143?

A buffer overflow vulnerability has been identified in the HTTP POST Request Handler of the TOTOLINK EX1200T. This issue arises from improper handling of the 'submit-url' argument within the /boafrm/formNtp function, which can be exploited remotely. Successful exploitation allows attackers to execute arbitrary code, potentially compromising the security and functionality of the device. Users are urged to implement recommended security measures to protect against potential exploits.

Affected Version(s)

EX1200T 4.1.2cu.5232_B20210713

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-2025-6143 - Proof of Concept

References

https://vuldb.com/?id.312618
vdb-entrytechnical-description
https://vuldb.com/?ctiid.312618
signaturepermissions-required
https://vuldb.com/?submit.593004
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

YeLeipeng_ (VulDB User)
.
CVE-2025-6143 : Buffer Overflow Vulnerability in TOTOLINK EX1200T HTTP POST Request Handler