What is CVE-2026-44193?

CVE-2026-44193 is a critical-severity vulnerability in Opnsense Core, classified under Argument Injection. CVSS score: 9.1/10. Published 2026-05-13.

How severe is CVE-2026-44193?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Opnsense Core

CVE-2026-44193

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore_config_section fails to sanitize user supplied input leading to Remote Code Execution. This vulnerability is fixed in 26.1.7.

Published 2026-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.0th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Opnsense Core — versions < 26.1.7
Opnsense

Weakness classification (CWE)

CWE-88 — Argument Injection

References

github.com/opnsense/core/security/advisories/GHSA-xxp9-93cr-x54p (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44193?: CVE-2026-44193 is a critical-severity vulnerability in Opnsense Core, classified under Argument Injection. CVSS score: 9.1/10. Published 2026-05-13.
How severe is CVE-2026-44193?: Critical severity. CVSS v3 base score is 9.1 out of 10.