CVE-2026-44195 - OPNsense: Authentication lockout bypass
CVE ID :CVE-2026-44195
Published : May 13, 2026, 10:16 p.m. | 51 minutes ago
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.
Severity: 5.3 | MEDIUM
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Published : May 13, 2026, 10:16 p.m. | 51 minutes ago
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.
Severity: 5.3 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...