Command Injection Vulnerability in Comfast CF-N1 V2 Router
CVE-2026-2534

5.3MEDIUM

Key Information:

Vendor

Comfast

Status
Cf-n1 V2
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2534?

The Comfast CF-N1 V2 version 2.6.0.2 contains a command injection vulnerability within the sub_44AC4C function located in the /cgi-bin/mbox-config?method=SET&section=ptest_bandwidth file. This flaw allows attackers to manipulate the 'bandwidth' argument, potentially leading to unauthorized command execution. Notably, this vulnerability can be exploited remotely, posing a significant risk to network integrity. The exploit has been publicly disclosed, yet the vendor received no response to initial notifications regarding the issue.

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Affected Version(s)

CF-N1 V2 2.6.0.2

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-2026-2534 - Proof of Concept

References

https://vuldb.com/?id.346122
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346122
signaturepermissions-required
https://vuldb.com/?submit.748783
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

allanp0e (VulDB User)
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