RCE in Netgate Pfsense Ce
CVE-2026-111225
Netgate pfSense CE 2.5.0 through 2.9.0 contains an OS command injection vulnerability in openvpn.learn-address.sh that allows authenticated VPN clients to execute commands as the unbound user. Attackers can embed shell metacharacters in the certificate common name or username, which is interpolated unquoted into su -c strings, when DNS Resolver client registration is enabled.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/abraxas/pfsense-ovpn-learn-cn (technical-description, exploit)
- abraxaslabs.tech/research/pfsense-ce-leftovers (technical-description)
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/us… (technical-description)
- www.vulncheck.com/advisories/netgate-pfsense-ce-2.5.0-through-2.9.0-os-command-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111225?
- CVE-2026-111225 is a medium-severity vulnerability in Netgate Pfsense Ce, classified under OS Command Injection. CVSS score: 5.0/10. Published 2026-10-15.
- How severe is CVE-2026-111225?
- Medium severity. CVSS v3 base score is 5.0 out of 10.