BestXsoftware Best Free Keylogger before 6.0.0 allows local users to gain privileges via a Trojan horse "%PROGRAMFILES%\BFK 5.2.9\syscrb.exe" file because of insecure permissions for the BUILTIN\Users group.
Severity
CVSS 3.0
7.8 high
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)