Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck
CVE-2026-111222Netgate pfSense CE through 2.9.0 php.ini Injection via Timezone Setting
Medium 6.6
In plain English
A medium-severity security flaw in pfSense CE from Netgate. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Severity (CVSS 3.1)6.6Medium
Exploit odds (30 days)1.0%top 38.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Netgate pfSense CE through 2.9.0 contains a php.ini injection vulnerability that allows authenticated users with General Setup privileges to inject directives by submitting an unvalidated timezone value. Attackers can embed a quote and newline to add auto_prepend_file pointing at /var/db/zoneinfo, executing PHP as root after php.ini is regenerated at boot or php-fpm restart.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Netgate | pfSense CE | 0 – through 2.9.0 |
Weakness: CWE-93 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/abraxas/pfsense-timezone-phpini exploit, technical-description
- https://abraxaslabs.tech/research/pfsense-ce-leftovers technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/system.php#L288 technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/system.inc#L2377-L2380 technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/rc.php_ini_setup#L163-L166 technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/rc.php_ini_setup#L220 technical-description
- VulnCheck Advisory: Netgate pfSense CE through 2.9.0 php.ini Injection via Timezone Setting third-party-advisory