CVE-2026-111227

Published Oct 15, 2026

Last updated 18 days ago

Overview

Description
Netgate pfSense CE through 2.9.0 contains a CRLF injection vulnerability in services_unbound_acls.php that allows authenticated users with the DNS Resolver: Access Lists privilege to inject Unbound configuration directives. Attackers can embed CR/LF characters in the aclname or aclaction fields written to access_lists.conf to add local-data, local-zone, or forward-zone directives and control DNS answers served to LAN clients.
Source
disclosure@vulncheck.com
NVD status
Analyzed
Products
pfsense

Risk scores

CVSS 4.0

Type
Secondary
Base score
5.1
Impact score
-
Exploitability score
-
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity
MEDIUM

CVSS 3.1

Type
Secondary
Base score
5.5
Impact score
2.7
Exploitability score
2.3
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
Severity
MEDIUM

Weaknesses

disclosure@vulncheck.com
CWE-93

Social media

Hype score
Not currently trending

Configurations