CVE-2026-111231highCWE-863

CVE-2026-111231: high-severity vulnerability in Netgate pfSense CE

Netgate pfSense CE through 2.9.0 Authorization Bypass via config_restore() and config_install()

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41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.6epss 0.8%
Netgate pfSense CE through 2.9.0 contains an authorization bypass vulnerability that allows read-only WebGUI users to replace config.xml because config_restore() and config_install() ignore the 'User - Config: Deny Config Write' privilege. Attackers holding page privileges for services_acb.php, uploadconfig.php, diag_confbak.php, or diag_backup.php can install a chosen config.xml to gain root-level code execution after reload or reboot.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Netgate · pfSense CE
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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