CVE-2026-44195: OPNsense is a FreeBSD based firewall and routing platform

Q: How do I fix CVE-2026-44195?

opnsense: upgrade to 26.1.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-44195 being exploited?

CVE-2026-44195 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44195 affect?

CVE-2026-44195 affects opnsense. Severity is medium (CVSS 5.3). 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 in

Q: How urgent is CVE-2026-44195?

Priority 35/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-44195 is a medium-severity flaw (CVSS 5.3) affecting opnsense. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 thre

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-307
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: opnsense

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 22:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

opnsense opnsense UPGRADE

Affected: < 26.1.7

Fixed in: 26.1.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy opnsense || rpm -q opnsense || opnsense --version

2. UPGRADE to 26.1.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade opnsense

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade opnsense

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44195?

opnsense: upgrade to 26.1.7. Exact commands for each OS are on this page.

Is CVE-2026-44195 being exploited?

CVE-2026-44195 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44195 affect?

CVE-2026-44195 affects opnsense. Severity is medium (CVSS 5.3). 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 in

How urgent is CVE-2026-44195?

Priority 35/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

pfSense and OPNsense vulnerabilities

Related CVEs

CVE-2026-44194 CRITICAL 9.1 UPGRADE OPNsense is a FreeBSD based firewall and routing platform
CVE-2026-44193 CRITICAL 9.1 UPGRADE OPNsense is a FreeBSD based firewall and routing platform
CVE-2026-45158 CRITICAL 9.1 UPGRADE OPNsense is a FreeBSD based firewall and routing platform

References

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