Buffer Overflow Vulnerability in TOTOLINK X15 HTTP POST Handler
CVE-2025-8242

8.7HIGH

Key Information:

Vendor

Totolink
Status
X15
Vendor
CVE Published:
27 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8242?

A buffer overflow vulnerability exists in the TOTOLINK X15 product, specifically within the HTTP POST Request Handler component. The flaw affects how the component processes inputs, particularly the parameters ip6addr, url, vpnPassword, and vpnUser. An attacker can exploit this vulnerability remotely, leading to potential unauthorized code execution. As the exploit has been disclosed publicly, it is crucial for users of the affected version to take immediate action to secure their devices.

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-2025-8242 - Proof of Concept

References

https://vuldb.com/?id.317830
vdb-entrytechnical-description
https://vuldb.com/?ctiid.317830
signaturepermissions-required
https://vuldb.com/?submit.622661
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

panda_0x1 (VulDB User)
.
CVE-2025-8242 : Buffer Overflow Vulnerability in TOTOLINK X15 HTTP POST Handler