Authentication Vulnerability in TOTOLINK N600R Router
CVE-2026-82555

6.3MEDIUM

Key Information:

Vendor

Totolink
Status
N600r
Vendor
CVE Published:
30 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82555?

A significant vulnerability exists within the TOTOLINK N600R Router, specifically in the loginAuth function of the Authentication Handler component. This flaw arises from the use of insufficiently random values, making the system susceptible to remote exploitation. Attackers could leverage this vulnerability to potentially gain unauthorized access or manipulate the device. The issue manifests under complex conditions, emphasizing the necessity for robust security measures to mitigate risks.

Affected Version(s)

N600R 4.3.0cu.7866_B20220506

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-2026-82555 - Proof of Concept

References

https://vuldb.com/vuln/397071
vdb-entrytechnical-description
https://vuldb.com/vuln/397071/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82555
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

bluerry (VulDB User)
.