Netgate pfSense CE 2.4.5 through 2.9.0 OS Command Injection via system_advanced_admin.php
pfSense CE 2.4.5 through 2.9.0 contains an OS command injection vulnerability that allows authenticated WebGUI users with Advanced Admin Access privilege to execute commands as root via Login Protection settings. Attackers can submit sshguard threshold, block time, or detection time values containing newlines or $(...) that are written unvalidated to sshguard.conf and sourced as root on restart.
CVE-2026-111226
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-2026-111226
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": "2.4.5",
"versionType": "semver",
"lessThanOrEqual": "2.9.0"
}
],
"packageURL": "pkg:github/pfsense/pfsense",
"collectionURL": "https://github.com",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111226
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30059 · Revision 1
- Added to Heist Feed
- Publisher date