UltraEdit uses weak encryption to record FTP passwords in the uedit32.ini file, which allows local users who can read the file to decrypt the passwords and gain privileges.

Untrusted search path vulnerability in IDM Computer Solutions UltraEdit 16.20.0.1009, 16.10.0.1036, and probably other versions allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse dwmapi.dll that is located in the same folder as a bin, cpp, css, c, dat, hpp, html, h, ini, java, log, mak, php, prj, txt, or xml file.

An issue was discovered in IDM UltraEdit through 24.10.0.32. To exploit the vulnerability, on unpatched Windows systems, an attacker could include in the same directory as the affected executable a DLL using the name of a Windows DLL. This DLL must be preloaded by the executable (for example, "ntmarta.dll"). When the installer EXE is executed by the user, the DLL located in the EXE's current directory will be loaded instead of the Windows DLL, allowing the attacker to run arbitrary code on the affected system.