CVE-2021-44981

In QuickBox Pro v2.5.8 and below, the config.php file has a variable which takes a GET parameter value and parses it into a shell_exec(''); function without properly sanitizing any shell arguments, therefore remote code execution is possible. Additionally, as the media server is running as root by default attackers can use the sudo command within this shell_exec(''); function, which allows for privilege escalation by means of RCE.

• CWE-78

• https://github.com/QuickBox/QB/issues/202Issue Tracking, Third Party Advisory
• https://websec.nl/blog/61b2b37a43a1155c848f3b08/websec%20finds%20critical%20vulnerabilities%20in%20popular%20media%20serverExploit, Third Party Advisory
• https://github.com/QuickBox/QB/issues/202Issue Tracking, Third Party Advisory
• https://websec.nl/blog/61b2b37a43a1155c848f3b08/websec%20finds%20critical%20vulnerabilities%20in%20popular%20media%20serverExploit, Third Party Advisory

Published

Jan 24, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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