CVE-2026-111229 is a vulnerability in Netgate Pfsense
Published on October 15, 2026
Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via Captive Portal HA Sync
pfSense CE 2.7.0 through 2.9.0 contains a command injection vulnerability in services_captiveportal_hasync.php that allows users with only the Captive Portal HA privilege to execute commands as root. Attackers can set backwardsyncip to a malicious XMLRPC server returning connected_users with shell metacharacters in ip or mac fields, which captiveportal_load_pfctl passes unescaped to a pfctl shell command.
Vulnerability Analysis
CVE-2026-111229 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-2026-111229. 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-2026-111229 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-111229
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Affected Versions
Netgate pfSense CE:- Version 2.7.0, <= 2.9.0 is affected.