High 7.2Published Oct 15, 2026

CVE-2026-111231Netgate pfSense CE through 2.9.0 Authorization Bypass via config_restore() and config_install()

Updated under an hour ago (Oct 29, 2026, 2:00 AM ET)

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It affects Netgate pfSense CE and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.84%, higher than 58% of scored CVEs.

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Every CVE for Netgate pfSense CE

Exploited in the last 30 days

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: 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.84% (percentile 58)
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 26, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Netgate pfSense CE netgate:pfsense_ce (from the name)	through 2.9.0	CNA record
pfsense pfsense pfsense:pfsense	through 2.9.0	NVD

References

References

https://github.com/abraxas/pfsense-config-readonly-restore	exploit, technical-description, third-party-advisory
https://abraxaslabs.tech/research/pfsense-ce-leftovers	technical-description, issue-tracking
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/config.lib.inc#L743-L798	technical-description, product
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/config.lib.inc#L588-L597	technical-description, product
https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-authorization-bypass-via-config-restore-and-config-install	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.