The Sentinel LDK Run-Time Environment installer (Versions 7.6 and prior) adds a firewall rule named “Sentinel License Manager” that allows…

published 2021-06-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19649

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-159-06 updated 2021-06-08 cvss 9.6

Thales Sentinel LDK Run-Time Environment

Thales Sentinel LDK Run-Time Environment <= 7.6
affected: mitigation “Thales recommends vendors and users to upgrade to RTE Version 8.15 or later.” cpl.thalesgroup.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Sentinel LDK Run-Time Environment

Classification

Weakness

CWE-459 Incomplete Cleanup

References

us-cert.cisa.gov /ics/advisories/icsa-21-159-06
third-party-advisory, us-government-resource

Sources

CVE List CVE-2021-32928
NVD CVE-2021-32928

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary