Vulnerability in Netgate Pfsense Ce
CVE-2026-111228
Netgate pfSense CE from 2.7.1 through 2.9.0 contains a CRLF injection vulnerability in services_unbound_advanced.php that allows authenticated users with DNS Resolver: Advanced privilege to inject Unbound directives. Attackers can embed CR/LF characters in the unvalidated sock_queue_timeout parameter, which is written raw into unbound.conf, to override local records and forwarding for all clients.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/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-unbound-sock-timeout (technical-description, exploit)
- abraxaslabs.tech/research/pfsense-ce-leftovers (technical-description)
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/us… (technical-description)
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/et… (technical-description)
- www.vulncheck.com/advisories/netgate-pfsense-ce-2.7.1-through-2.9.0-crlf-inject… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111228?
- CVE-2026-111228 is a medium-severity vulnerability in Netgate Pfsense Ce, classified under CRLF Injection. CVSS score: 5.5/10. Published 2026-10-15.
- How severe is CVE-2026-111228?
- Medium severity. CVSS v3 base score is 5.5 out of 10.