Buffer Overflow in TOTOLINK X15 HTTP POST Request Handler
CVE-2025-6402

8.7HIGH

Key Information:

Vendor

Totolink
Status
X15
Vendor
CVE Published:
21 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6402?

A buffer overflow vulnerability exists in the TOTOLINK X15's HTTP POST Request Handler, specifically related to the /boafrm/formIpv6Setup file. This issue arises from improper handling of the submit-url argument, which could allow remote attackers to manipulate data, leading to system instability or unauthorized actions. The vulnerability has been publicly disclosed and poses a significant risk to users if not addressed promptly.

Affected Version(s)

X15 1.0.0-B20230714.1105

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-2025-6402 - Proof of Concept

References

https://vuldb.com/?id.313396
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313396
signaturepermissions-required
https://vuldb.com/?submit.597693
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

yuhongxiang (VulDB User)
.
CVE-2025-6402 : Buffer Overflow in TOTOLINK X15 HTTP POST Request Handler