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CVE-2026-111217— Netgate pfSense CE through 2.9.0 OS Command Injection via CARP VHID

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 及更早版本中存在操作系统命令注入漏洞。具有虚拟 IP 编辑权限的已认证用户可通过存储未经验证的 CARP VHID（虚拟高可用 ID）以 root 权限执行任意命令。攻击者可提供包含 Shell 元字符的 VHID 值，当通过 函数执行 调用，或在渲染 CARP 状态时调用 函数时，这些恶意字符将被执行，从而导致命令注入。

CVSS 7.2 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
Netgate pfSense CE ≤ 2.9.0 affected
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I. Basic Information for CVE-2026-111217

Vulnerability Information
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Vulnerability Title
Netgate pfSense CE through 2.9.0 OS Command Injection via CARP VHID
Source: CVE Program / CVE List V5
Vulnerability Description
Netgate pfSense CE through 2.9.0 contains an OS command injection vulnerability that allows authenticated users with Virtual IP edit privileges to execute commands as root by storing an unvalidated CARP VHID. Attackers can supply a VHID containing shell metacharacters that executes via interface_ipalias_configure() ifconfig calls or get_carp_interface_status() when CARP status is rendered.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
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-2026-111217

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III. Intelligence Information for CVE-2026-111217

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Patches & Fixes for CVE-2026-111217 (1)

Vendor Advisories for CVE-2026-111217 (1)

Proof of Concept for CVE-2026-111217 (1)

Other References for CVE-2026-111217 (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-2026-111216 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-2026-111215 7.2 HIGH Netgate pfSense CE through 2.9.0 OS Command Injection via Wireless Parent Interface
CVE-2026-111229 7.2 HIGH Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via Captive Portal HA Sync
CVE-2026-111220 7.2 HIGH Netgate pfSense CE through 2.9.0 Crontab Injection via PPP Periodic Reset ptpid
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-2026-111219 6.6 MEDIUM Netgate pfSense CE through 2.9.0 Command Injection via PPPoE Server Username
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-2026-111227 5.5 MEDIUM Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php
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-78

V. Comments for CVE-2026-111217

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