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Advisory severityHigh8.6Netgate pfSense Updated

High [CVE-2026-111231] 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

This high-severity Netgate pfSense advisory covers CVE-2026-111231 affecting pfSense CE.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-111231 Source published Source updated

VulniPulse record published Record updated

CVE-2026-111231
Affected products & platforms
Netgate pfSensepfSense CE
Open source advisory

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Summary

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.

Affected versions
  • through 2.9.0

NVD record · high-confidence parse· fetched 6 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

NVD record · high-confidence parse· fetched 6 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • 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.

NVD record · high-confidence parse· fetched 6 days ago·verify at source

Discussion(0)

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