Cyber Resilience

CVE-2026-44193

CriticalPublic PoC

Published: 13 May 2026

Published
13 May 2026
Modified
15 May 2026
KEV Added
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Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0069 48.1th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-44193 is a critical-severity Argument Injection (CWE-88) vulnerability in Opnsense Opnsense. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 48.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-88

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Direct RCE via unsanitized XMLRPC input on public-facing firewall enables T1190 (Exploit Public-Facing Application).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-45158Same product: Opnsense Opnsense
CVE-2026-34578Same product: Opnsense Opnsense
CVE-2026-44194Same product: Opnsense Opnsense
CVE-2026-30868Same product: Opnsense Opnsense
CVE-2025-50989Same product: Opnsense Opnsense
CVE-2026-22582Shared CWE-88
CVE-2026-26194Shared CWE-88
CVE-2024-47516Shared CWE-88
CVE-2026-2298Shared CWE-88
CVE-2026-44449Shared CWE-88

Affected Assets

opnsense
opnsense
≤ 26.1.7

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References