Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-44195

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 25.1%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-44195


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