CVE-2020-26130: Open Tftp Server Project Open Tftp Server

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Issues were discovered in Open TFTP Server multithreaded 1.66 and Open TFTP Server single port 1.66. Due to insufficient access restrictions in the default installation directory, an attacker can elevate privileges by replacing the OpenTFTPServerMT.exe or the OpenTFTPServerSP.exe binary.

Affected products

• Open Tftp Server Project Open Tftp Server: version 1.66 only

Published 2020-10-28. Last modified 2026-06-17.