CVE-2020-37253: Winstep

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Winstep 18.06.0096 contains an unquoted service path vulnerability in the Winstep Xtreme Service that allows local attackers to escalate privileges. Attackers can place malicious executables in the Program Files directory to be executed with LocalSystem privileges when the service starts.

Affected products

• Winstep Winstep: version 18.06.0096 only

Published 2026-06-19. Last modified 2026-10-06.