Command Injection Vulnerability in EFM ipTIME C200 by EFM Networks
CVE-2026-7833

8.6HIGH

Key Information:

Vendor

Efm

Status
Iptime C200
Vendor
CVE Published:
5 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7833?

A command injection vulnerability has been discovered in the EFM ipTIME C200 router, specifically affecting the ApplyRestore Endpoint functionality located in the /cgi/iux_set.cgi file. This weakness originates from improper handling of the RestoreFile argument within the sub_408F90 function, allowing an attacker to execute arbitrary commands remotely. The public availability of the exploitation methods raises concerns, as the potential for unauthorized control over the router is significant. Attempts to notify the vendor regarding this security issue went unanswered, highlighting the urgent need for users to assess their devices and implement mitigations.

Affected Version(s)

ipTIME C200 1.092

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-2026-7833 - Proof of Concept

References

https://vuldb.com/vuln/361112
vdb-entrytechnical-description
https://vuldb.com/vuln/361112/cti
signaturepermissions-required
https://vuldb.com/submit/807786
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
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

jfkk (VulDB User)
VulDB CNA Team
.