Command Injection Vulnerability in Comfast CF-E4 by Comfast
CVE-2026-2537

5.1MEDIUM

Key Information:

Vendor

Comfast

Status
Cf-e4
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2537?

A command injection vulnerability has been detected in Comfast CF-E4 version 2.6.0.1, specifically within the HTTP POST Request Handler. The flaw exists in the /cgi-bin/mbox-config?method=SET&section=ntp_timezone component, allowing attackers to manipulate the timestr argument. This could lead to unauthorized command execution on the device. The vulnerability can be exploited remotely, making it especially critical for users. Publicly available exploit techniques exist, yet the vendor failed to respond to early disclosures regarding this issue.

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Affected Version(s)

CF-E4 2.6.0.1

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-2026-2537 - Proof of Concept

References

https://vuldb.com/?id.346125
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346125
signaturepermissions-required
https://vuldb.com/?submit.749196
third-party-advisory

CVSS V4

Score:
5.1
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

cha0yang (VulDB User)
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