CVE-2026-111214: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Netgate pfSense CE
Description
Netgate pfSense CE versions 2.7.0 through 2.9.0 contain an OS command injection vulnerability. Authenticated users with QinQ edit privileges can exploit this by saving a crafted parent interface name that is not properly validated. This input is later interpolated into shell commands executed as root, allowing command execution with elevated privileges.
CVSS v4.0
Score 8.6high
Affected software
Netgate
pfSense CE
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-111214 describes an OS command injection vulnerability in Netgate pfSense CE versions 2.7.0 through 2.9.0. The flaw arises because the parent interface name used in QinQ configurations is not properly neutralized before being included in ifconfig shell commands. Authenticated users with the ability to edit QinQ entries can inject arbitrary commands by crafting the 'if' value, leading to root-level command execution on the system.
Potential Impact
Successful exploitation allows an authenticated user with QinQ edit privileges to execute arbitrary commands as root on the pfSense CE system. This can lead to full system compromise, unauthorized control, and potential disruption of network services.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict QinQ edit privileges to trusted administrators only and monitor for suspicious activity related to interface configuration changes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-15T18:21:16.320Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad123bc2cdf04f65652b738
Added to database: 10/15/2026, 19:04:28 UTC
Last enriched: 10/15/2026, 19:19:43 UTC
Last updated: 10/15/2026, 19:19:43 UTC
Views: 7
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.
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.