Vulnerability in Opnsense Core
CVE-2026-119424
OPNsense core before 26.7.8 contains a configuration line injection vulnerability that allows authenticated users with wireless-edit privilege to inject directives by embedding CR/LF characters in WPA fields. Attackers can place newlines in wpa.identity, wpa.passphrase, or RADIUS shared secrets to append arbitrary wpa_supplicant or hostapd directives loaded by root-run daemons.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.
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/opnsense/core/commit/9f1eac0f9bdf705766ab61f9d62b9d55757fd0da (patch)
- github.com/opnsense/core/commit/3bbd714b4c4b60f164e2e908501f208d3eadf645 (patch)
- github.com/opnsense/core/blob/26.7.7/src/opnsense/mvc/app/models/OPNsense/Inter… (technical-description)
- github.com/opnsense/core/blob/26.7.7/src/etc/inc/interfaces.inc (technical-description)
- abraxaslabs.tech/research/opnsense-wlan-wpa-line (third-party-advisory)
- github.com/opnsense/core (product)
- www.vulncheck.com/advisories/opnsense-before-26.7.8-wireless-wpa-configuration-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119424?
- CVE-2026-119424 is a medium-severity vulnerability in Opnsense Core, classified under CRLF Injection. CVSS score: 6.8/10. Published 2026-10-30.
- How severe is CVE-2026-119424?
- Medium severity. CVSS v3 base score is 6.8 out of 10.