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
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.
MEDIUM · CVSS 5.3
EPSS 0.00087
Schedule remediation
- Public exploit or PoC is available
- SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0
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