Unrestricted File Upload Vulnerability in EFM iptime A6004MX Router
CVE-2026-2550

9.3CRITICAL

Key Information:

Vendor

Efm

Status
Iptime A6004mx
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2550?

A security flaw exists in the EFM iptime A6004MX router version 14.18.2 within the commit_vpncli_file_upload function of the /cgi/timepro.cgi script. This vulnerability enables remote attackers to upload files without restriction, which can lead to arbitrary code execution or further exploitation of the device. Despite early notifications to the vendor regarding this vulnerability, no response has been received, raising concerns about the security and support for the affected product.

Affected Version(s)

iptime A6004MX 14.18.2

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-2026-2550 - Proof of Concept

References

https://vuldb.com/?id.346159
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346159
signaturepermissions-required
https://vuldb.com/?submit.749986
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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

LX-LX (VulDB User)
.