CVE-2021-32928: Thalesgroup Sentinel Ldk Run-Time Environment

Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days.

The Sentinel LDK Run-Time Environment installer (Versions 7.6 and prior) adds a firewall rule named “Sentinel License Manager” that allows incoming connections from private networks using TCP Port 1947. While uninstalling, the uninstaller fails to close Port 1947.

Affected products

• Thalesgroup Sentinel Ldk Run-Time Environment: up to and including 7.6

Published 2021-06-16. Last modified 2026-06-17.