Command Injection Vulnerability in Totolink NR1800X Router
CVE-2026-1327

5.3MEDIUM

Key Information:

Vendor

Totolink
Status
Nr1800x
Vendor
CVE Published:
22 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1327?

A security vulnerability has been identified in the Totolink NR1800X router, specifically in the setTracerouteCfg function located within the /cgi-bin/cstecgi.cgi file. This vulnerability arises from improper handling of the argument command, which allows an attacker to inject arbitrary commands. As the exploit can be launched remotely, it poses significant risks to network integrity and confidentiality. The issue was publicly disclosed, increasing the urgency for affected users to implement mitigations.

Affected Version(s)

NR1800X 9.1.0u.6279_B20210910

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-2026-1327 - Proof of Concept

References

https://vuldb.com/?id.342303
vdb-entrytechnical-description
https://vuldb.com/?ctiid.342303
signaturepermissions-required
https://vuldb.com/?submit.735790
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

wxhwxhwxh_ (VulDB User)
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