Fluxion OS Command Injection via Malicious SSID

Executive Summary

CVE-2026-125399 is an OS command injection vulnerability in Fluxion before version 6.39. It occurs in the fluxion.sh target scanner when decoding access point ESSIDs. The script uses eval after escaping only single quotes, allowing attackers within Wi-Fi range to broadcast a crafted SSID that executes commands as root when scanned or selected.

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Detection Guidance

To detect this vulnerability, check if you are running Fluxion versions before 6.39. Inspect the fluxion.sh script for unsafe eval usage in ESSID handling. Commands like 'fluxion --version' or 'grep -n eval /path/to/fluxion.sh' may help identify vulnerable versions or code patterns.

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Impact Analysis

This vulnerability allows attackers to execute arbitrary commands as root on the system running Fluxion. Since Fluxion requires root privileges, an exploit could lead to full system compromise, data theft, or further network attacks. Users within Wi-Fi range of the attacker can be targeted during routine scans.

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Compliance Impact

This vulnerability could lead to unauthorized root access on systems running Fluxion, potentially exposing sensitive data. For GDPR, this may result in data breaches requiring notification under Article 33. For HIPAA, unauthorized access to protected health information could violate compliance requirements.

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Mitigation Strategies

Immediately update Fluxion to version 6.39 or later. Remove or disable any vulnerable versions. Avoid scanning or selecting access points with untrusted SSIDs until patched. Ensure no root privileges are used unnecessarily during scans.

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