Denial of Service Vulnerability in TOTOLINK N300RH Router by TOTOLINK
CVE-2025-6401

5.1MEDIUM

Key Information:

Vendor

Totolink
Status
N300rh
Vendor
CVE Published:
21 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6401?

A vulnerability exists in the TOTOLINK N300RH router, specifically in the HTTP POST Message Handler component. This issue can be triggered by manipulating the 'url' argument, which may lead to a denial of service, rendering the router unresponsive. The flaw has been publicly disclosed and poses a risk to users who have not applied the recommended security updates.

Affected Version(s)

N300RH 6.1c.1390_B20191101

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-2025-6401 - Proof of Concept

References

https://vuldb.com/?id.313395
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313395
signaturepermissions-required
https://vuldb.com/?submit.597688
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Adjacent 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)
.