Medium 5.5Published Oct 15, 2026

CVE-2026-111227Netgate pfSense CE through 2.9.0 CRLF Injection via services_unbound_acls.php

Updated under an hour ago (Oct 28, 2026, 11:50 AM ET)

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It affects Netgate pfSense CE and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Netgate pfSense CE

Exploited in the last 30 days

Netgate pfSense CE through 2.9.0 contains a CRLF injection vulnerability in services_unbound_acls.php that allows authenticated users with the DNS Resolver: Access Lists privilege to inject Unbound configuration directives. Attackers can embed CR/LF characters in the aclname or aclaction fields written to access_lists.conf to add local-data, local-zone, or forward-zone directives and control DNS answers served to LAN clients.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
Weakness (CWE): CWE-93
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

Netgate pfSense CE netgate:pfsense_ce (from the name)	through 2.9.0	CNA record
pfsense pfsense pfsense:pfsense	through 2.9.0	NVD

References

References

https://github.com/abraxas/pfsense-unbound-acl-crlf	exploit, technical-description, third-party-advisory
https://abraxaslabs.tech/research/pfsense-ce-leftovers	technical-description, issue-tracking
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/unbound.inc#L1094-L1112	technical-description, product
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/services_unbound_acls.php#L121-L142	technical-description, product
https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-crlf-injection-via-services-unbound-acls-php	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.