CVE-2026-44193 OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_config_section` method

Critical 9.1 Published 13 May 2026 Updated 16 May 2026

Attackers can execute arbitrary code on OPNsense firewalls via the XMLRPC restore_config_section method due to insufficient input sanitization.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-44193?

CVE-2026-44193 is a critical command injection vulnerability in opnsense core, published on 13 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official 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.

Weakness: CWE-88

Which versions are affected by CVE-2026-44193?

It affects 1 product.

Products include Opnsense Opnsense.

How do I fix CVE-2026-44193?

No fix has been published for CVE-2026-44193 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-44193 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44193 exists.

Sources

Also known as GHSA-xxp9-93cr-x54p.