Local File Read Vulnerability in Netgate pfSense CE
CVE-2026-111230

6.9MEDIUM

Key Information:

Vendor

Netgate

Status
Pfsense Ce
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111230?

The pfSense CE version up to 2.9.0 is susceptible to a local file read vulnerability due to improper handling of Dynamic DNS client privileges. By setting a malicious file:// custom Update URL in the services_dyndns_edit.php, attackers can manipulate the logging mechanism to read sensitive files from the system, such as /conf/config.xml or /etc/master.passwd. This vulnerability could lead to the exposure of critical system information, posing serious risks to the integrity and confidentiality of the affected system.

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-2026-111230 - Proof of Concept

References

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

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
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
.