Security Advisory

CVE-2026-44195

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-13 21:52:42

Last updated 2026-05-14 13:46:30

Assigner GitHub_M

CVSS score 5.3

State PUBLISHED

Description

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler allows an unauthenticated attacker to continuously reset the authentication failure counter for their IP address. By interjecting a crafted username containing a success keyword ("Accepted" or "Successful login") between normal brute-force attempts, an attacker can prevent the failure counter from ever reaching the lockout threshold. This vulnerability is fixed in 26.1.7.

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