CVE-2026-44193: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in opnsense core
A critical vulnerability (CVE-2026-44193) exists in OPNsense core versions prior to 26. 1. 7 where the XMLRPC method opnsense. restore_config_section does not properly sanitize user input. This improper neutralization of argument delimiters (CWE-88) can lead to remote code execution. The issue is fixed in version 26. 1. 7. The vulnerability has a CVSS score of 9. 1, indicating a high severity with network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
OPNsense core, a FreeBSD-based firewall and routing platform, contains a command injection vulnerability in the XMLRPC method opnsense.restore_config_section in versions before 26.1.7. The vulnerability arises from improper sanitization of user-supplied input, allowing an attacker with high privileges to execute arbitrary commands remotely. This vulnerability is tracked as CVE-2026-44193 and is classified under CWE-88. The vulnerability is resolved in OPNsense version 26.1.7.
Potential Impact
Successful exploitation allows remote code execution with high privileges, potentially compromising the confidentiality, integrity, and availability of the affected system. Given the network attack vector and low complexity, this vulnerability poses a critical risk to affected OPNsense installations prior to 26.1.7.
Mitigation Recommendations
Upgrade OPNsense core to version 26.1.7 or later where this vulnerability is fixed. Since the vendor advisory confirms the fix in 26.1.7, applying this official update is the recommended remediation. No additional mitigation steps are indicated.
CVE-2026-44193: CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') in opnsense core
Description
A critical vulnerability (CVE-2026-44193) exists in OPNsense core versions prior to 26. 1. 7 where the XMLRPC method opnsense. restore_config_section does not properly sanitize user input. This improper neutralization of argument delimiters (CWE-88) can lead to remote code execution. The issue is fixed in version 26. 1. 7. The vulnerability has a CVSS score of 9. 1, indicating a high severity with network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OPNsense core, a FreeBSD-based firewall and routing platform, contains a command injection vulnerability in the XMLRPC method opnsense.restore_config_section in versions before 26.1.7. The vulnerability arises from improper sanitization of user-supplied input, allowing an attacker with high privileges to execute arbitrary commands remotely. This vulnerability is tracked as CVE-2026-44193 and is classified under CWE-88. The vulnerability is resolved in OPNsense version 26.1.7.
Potential Impact
Successful exploitation allows remote code execution with high privileges, potentially compromising the confidentiality, integrity, and availability of the affected system. Given the network attack vector and low complexity, this vulnerability poses a critical risk to affected OPNsense installations prior to 26.1.7.
Mitigation Recommendations
Upgrade OPNsense core to version 26.1.7 or later where this vulnerability is fixed. Since the vendor advisory confirms the fix in 26.1.7, applying this official update is the recommended remediation. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-05T15:13:47.570Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a052a70cbff5d86103e0d75
Added to database: 5/14/2026, 1:50:40 AM
Last enriched: 5/14/2026, 1:50:59 AM
Last updated: 5/14/2026, 2:55:36 AM
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.