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.
CVSS 5.3EPSS 0.318%Risque 0.55
Voir la source- Publication
- 2026-05-13 22:16:43
- Versions concernées
- <26.1.7
- Type
- Core software
- Vecteur
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N