CVE-2026-44193: opnsense Argument Injection

Description

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.

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CVSS v3.1 Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0033

Probability of exploitation

0.56%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-88 CWE-88

Affected Products

Vendor	Product	Versions
opnsense	opnsense	< 26.1.7

References

Advisories & Patches

https://github.com/opnsense/core/security/advisories/GHSA-xxp9-93cr-x54p https://github.com/opnsense/core/security/advisories/GHSA-xxp9-93cr-x54p

Exploits

https://github.com/opnsense/core/security/advisories/GHSA-xxp9-93cr-x54p https://github.com/opnsense/core/security/advisories/GHSA-xxp9-93cr-x54p

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-44193? +

CVE-2026-44193 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0033, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-44193? +

CVE-2026-44193 affects products from opnsense, specifically: opnsense. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-44193? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-44193