IPCop <= 2.1.9 Authenticated RCE
CVE-2021-4466

8.7HIGH

Key Information:

Vendor

Ipcop Project

Status
Ipcop
Vendor
CVE Published:
14 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-4466?

IPCop versions up to and including 2.1.9 contain an authenticated remote code execution vulnerability within the web-based administration interface. The email configuration component inserts user-controlled values, including the EMAIL_PW parameter, directly into system-level operations without proper input sanitation. By modifying the email password field to include shell metacharacters and issuing a save-and-test-mail action, an authenticated attacker can execute arbitrary operating system commands with the privileges of the web interface, resulting in full system compromise.

Affected Version(s)

IPCop 0 <= 2.1.9

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-2021-4466 - Proof of Concept

References

https://www.exploit-db.com/exploits/50183
exploit
https://www.ipcop.org/
product
https://sourceforge.net/projects/ipcop/
product

CVSS V4

Score:
8.7
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

Mücahit Saratar
JSON
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CVE-2021-4466 : Authenticated Remote Code Execution Vulnerability in IPCop by IPCop Development Team