setup.exe before 2.573.2.3 in Cygwin does not properly verify the authenticity of packages, which allows remote Cygwin mirror servers or man-in-the-middle attackers to execute arbitrary code via a package list containing the MD5 checksum of a Trojan horse package.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.012
EPSS Ranking 78.3%