CVE-2026-111223: Netgate pfSense CE 2.7.0 through 2.9.0 Command Injection via IPsec Mobile Login Banner

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-10-15 · updated 2026-10-19
Weakness: CWE-74

Description

Netgate pfSense CE 2.7.0 through 2.9.0 contains a configuration injection vulnerability that allows authenticated users with IPsec Mobile privileges to execute commands as root via the login_banner field. Attackers can submit a single-line banner containing '}' to escape the unquoted strongswan.conf attr value and define charon.start-scripts entries that charon executes as root on restart.

Affected products

Netgate pfSense CE: from 2.7.0 through 2.9.0

References

https://abraxaslabs.tech/research/pfsense-ce-leftovers
https://abraxaslabs.tech/research/pfsense-ipsec-login-banner
https://github.com/abraxas/pfsense-ipsec-login-banner
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/ipsec.inc#L1361-L1388
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/ipsec.inc#L1842-L1845
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/vpn_ipsec_mobile.php#L269-L273
https://github.com/pfsense/pfsense/commit/27a52d0807
https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.0-through-2.9.0-command-injection-via-ipsec-mobile-login-banner

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