PT-2026-40828 · Opnsense · Opnsense

Published 2026-05-13 · Updated 2026-05-14 · CVE-2026-44195

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions OPNsense versions prior to 26.1.7

Description A logic flaw in the 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 such as "Accepted" or "Successful login" between normal brute-force attempts, an attacker can prevent the failure counter from reaching the lockout threshold.

Recommendations Update to version 26.1.7.

Exploit

Fix

Improper Restriction of Excessive Authentication Attempts

Weakness Enumeration

CWE-307

Related Identifiers

CVE-2026-44195

Affected Products

Opnsense

References · 6

• 🔥 https://gist.github.com/sopex/b9786e72e2a5d9b1bbd81ed8477c351b · Exploit
• https://github.com/opnsense/core/security/advisories/GHSA-h3vx-4q27-rc42 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-44195 · Security Note
• https://twitter.com/CVEnew/status/2054709182407057509 · Twitter Post
• https://t.me/CVEtracker/53710 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2054819349362262111 · Twitter Post