CVE-2020-24990

An issue was discovered in QSC Q-SYS Core Manager 8.2.1. By utilizing the TFTP service running on UDP port 69, a remote attacker can perform a directory traversal and obtain operating system files via a TFTP GET request, as demonstrated by reading /etc/passwd or /proc/version.

• CWE-22

• http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.htmlThird Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Oct/30Mailing List, Third Party Advisory
• https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htmVendor Advisory
• http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.htmlThird Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Oct/30Mailing List, Third Party Advisory
• https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htmVendor Advisory

Published

Oct 28, 2020

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.
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