Medium severity5.3NVD Advisory· Published May 13, 2026· Updated May 15, 2026
CVE-2026-44195
CVE-2026-44195
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.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- gist.github.com/sopex/b9786e72e2a5d9b1bbd81ed8477c351bnvdExploit
- github.com/opnsense/core/security/advisories/GHSA-h3vx-4q27-rc42nvdExploitMitigationVendor Advisory
News mentions
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