CVE•Published 2026-10-15•Modified 2026-10-21•0 articles on news•4 live references•NVD data

CVE-2026-111227Pfsense · Pfsense

Vulnerability data via NVD (ingested)

CVSS v3.1

5.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L

EPSS percentile

Exploit Prediction Scoring System · top 44% of all CVEs

Weaknesses (CWE)

CWE-93Improper Neutralization of CRLF Sequences

Description

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.

Timeline

Published 2026-10-15

Modified 2026-10-21

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag28 hosts

vuln:CVE-2026-111227

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Pfsense Pfsense"

All exposed Pfsense Pfsense instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Pfsense"

HTTP body or banner mentions "Pfsense" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-111227