CVE-2021-32928

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-16 · updated 2026-06-17
Weakness: CWE-459

Description

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

Sentinel LDK Run-Time Environment: through 7.6

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-159-06
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-06

Get alerted when CVE-2021-32928 or the next vulnerability affects your stack