CVE-2026-111217 is a vulnerability in Netgate Pfsense
Published on October 15, 2026
Netgate pfSense CE through 2.9.0 OS Command Injection via CARP VHID
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.
Vulnerability Analysis
CVE-2026-111217 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-111217. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2026-111217 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-111217
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Affected Versions
Netgate pfSense CE:- Before and including 2.9.0 is affected.