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CVE-2026-111227— Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php

Quick assessment

Affected
Netgate pfSense CE
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Netgate pfSense CE 版本 2.9.0 及更早版本中存在一个 CRLF 注入漏洞，该漏洞位于 services_unbound_acls.php 文件中。具有 DNS 解析器访问列表权限的已认证攻击者可利用此漏洞注入 Unbound 配置指令。攻击者可以在写入 access_lists.conf 的 aclname 或 aclaction 字段中嵌入回车/换行（CR/LF）字符，从而添加 local-data、local-zone 或 forward-zone 指令，进而控制面向局域网客户端提供的

CVSS 5.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
Netgate pfSense CE ≤ 2.9.0 affected
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I. Basic Information for CVE-2026-111227

Vulnerability Information
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Vulnerability Title
Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
Source: CVE Program / CVE List V5
Vulnerability 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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Netgate pfSense CE 0 ~ 2.9.0 -

II. Public POCs for CVE-2026-111227

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III. Intelligence Information for CVE-2026-111227

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Patches & Fixes for CVE-2026-111227 (1)

Proof of Concept for CVE-2026-111227 (1)

Other References for CVE-2026-111227 (1)

Same Patch Batch · Netgate · 2026-10-15 · 21 CVEs total

CVE-2026-110908 8.8 HIGH pfSense FRR 2.0.2_1命令注入漏洞
CVE-2026-111224 7.5 HIGH Netgate pfSense CE through 2.9.0 OS Command Injection via openvpn.connect_async.sh
CVE-2026-111223 7.2 HIGH Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via IPsec Mobile Login Banner
CVE-2026-111218 7.2 HIGH Netgate pfSense CE 2.7.0 through 2.9.0 OS Command Injection via Traffic Shaper Limiters
CVE-2026-111215 7.2 HIGH Netgate pfSense CE through 2.9.0 OS Command Injection via Wireless Parent Interface
CVE-2026-111217 7.2 HIGH Netgate pfSense CE through 2.9.0 OS Command Injection via CARP VHID
CVE-2026-111214 7.2 HIGH Netgate pfSense CE 2.7.0 through 2.9.0 OS Command Injection via interfaces_qinq_edit.php
CVE-2026-111216 7.2 HIGH Netgate pfSense CE through 2.9.0 OS Command Injection via Gateway Monitor IP
CVE-2026-111226 7.2 HIGH Netgate pfSense CE 2.4.5 through 2.9.0 OS Command Injection via system_advanced_admin.php
CVE-2026-111231 7.2 HIGH Netgate pfSense CE through 2.9.0 Authorization Bypass via config_restore() and config_inst
CVE-2026-111220 7.2 HIGH Netgate pfSense CE through 2.9.0 Crontab Injection via PPP Periodic Reset ptpid
CVE-2026-111229 7.2 HIGH Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via Captive Portal HA Sync
CVE-2026-111222 6.6 MEDIUM Netgate pfSense CE through 2.9.0 php.ini Injection via Timezone Setting
CVE-2026-111221 6.6 MEDIUM Netgate pfSense CE through 2.9.0 Command Injection via RADIUS Secret mpd.conf Injection
CVE-2026-111219 6.6 MEDIUM Netgate pfSense CE through 2.9.0 Command Injection via PPPoE Server Username
CVE-2026-111228 5.5 MEDIUM Netgate pfSense CE 2.7.1 through 2.9.0 CRLF Injection via services_unbound_advanced.php
CVE-2026-111225 5.0 MEDIUM Netgate pfSense CE 2.5.0 through 2.9.0 OS Command Injection via openvpn.learn-address.sh
CVE-2026-111230 4.9 MEDIUM Netgate pfSense CE through 2.9.0 Local File Read via Dynamic DNS Update URL
CVE-2026-111232 4.8 MEDIUM Netgate pfSense CE 2.3.0 through 2.9.0 Stored XSS via Separator Color
CVE-2026-111233 4.7 MEDIUM Netgate pfSense CE 2.7.1 through 2.9.0 Reflected XSS via firewall_rules.php

IV. Related Vulnerabilities

Same product: pfSense CE
Same vendor: Netgate
Same weakness: CWE-93

V. Comments for CVE-2026-111227

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