Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck

CVE-2026-119424OPNsense before 26.7.8 Wireless WPA Configuration Line Injection via Identity

Medium 6.8

In plain English

A medium-severity security flaw in core from opnsense. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.4%top 63.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
opnsense	core	0 – before 26.7.8

Weakness: CWE-93 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

References

https://github.com/opnsense/core/commit/9f1eac0f9bdf705766ab61f9d62b9d55757fd0da patch
https://github.com/opnsense/core/commit/3bbd714b4c4b60f164e2e908501f208d3eadf645 patch
https://github.com/opnsense/core/blob/26.7.7/src/opnsense/mvc/app/models/OPNsense/Interfaces/Wlan.xml#L185 technical-description
https://github.com/opnsense/core/blob/26.7.7/src/etc/inc/interfaces.inc#L1901 technical-description
https://abraxaslabs.tech/research/opnsense-wlan-wpa-line third-party-advisory
https://github.com/opnsense/core product
VulnCheck Advisory: OPNsense before 26.7.8 Wireless WPA Configuration Line Injection via Identity third-party-advisory