OPNsense is a FreeBSD based firewall and routing platform.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 13, 2026 · NIST NVD

   Detected

   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 f

2. Jun 17, 2026 · NIST NVD

   Updated

   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 f

Affected

• cpe opnsense/opnsenseversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-44195

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-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

  nvd.nist.gov

References

• Exploit · gist.github.com
• Exploit · github.com