OS Command Injection Vulnerability in Netgate pfSense CE
CVE-2026-111216

8.6HIGH

Key Information:

Vendor

Netgate

Status
Pfsense Ce
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111216?

Netgate pfSense CE versions up to 2.9.0 contain a vulnerability that allows authenticated users with gateway edit permissions to perform OS command injection. This vulnerability arises when shell metacharacters are injected into an IPv6 link-local zone index. Attackers can exploit this flaw by setting a gateway Monitor IP with an unvalidated zone that carries a malicious payload, which is then executed as a command by the dpinger process during monitoring. This could lead to unauthorized command execution with root privileges, thus compromising system security.

Affected Version(s)

pfSense CE 0 <= 2.9.0

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-2026-111216 - Proof of Concept

References

https://github.com/abraxas/pfsense-gw-ipv6-zone
exploittechnical-description
https://abraxaslabs.tech/research/pfsense-ce-leftovers
technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a...
technical-description

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

Abraxas Labs
.