Netgate pfSense CE through 2.9.0 Authorization Bypass via config_restore() and config_install()
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.
CVE-2026-111231
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111231
pfSense CE
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/pfsense/pfsense",
"vendor": "Netgate",
"product": "pfSense CE",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "2.9.0"
}
],
"packageURL": "pkg:github/pfsense/pfsense",
"collectionURL": "https://github.com",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111231
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30060 · Revision 1
- Added to Heist Feed
- Publisher date