How severe is CVE-2021-42809?

CVE-2021-42809 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-42809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42809?

CVE-2021-42809 affects Thalesgroup Sentinel Protection Installer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-42809 published?

CVE-2021-42809 was published on 2021-12-20 and last updated on 2026-06-17.

CVE-2021-42809

CVE-2021-42809 is a medium-severity vulnerability in Thalesgroup Sentinel Protection Installer with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-913.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.9
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-913
Affected product: Thalesgroup Sentinel Protection Installer
Published: 2021-12-20
Last modified: 2026-06-17

Description

Improper Access Control of Dynamically-Managed Code Resources (DLL) in Thales Sentinel Protection Installer could allow the execution of arbitrary code.

Frequently asked questions

What is CVE-2021-42809?: Improper Access Control of Dynamically-Managed Code Resources (DLL) in Thales Sentinel Protection Installer could allow the execution of arbitrary code.
How severe is CVE-2021-42809?: CVE-2021-42809 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-42809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42809?: CVE-2021-42809 affects Thalesgroup Sentinel Protection Installer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42809 published?: CVE-2021-42809 was published on 2021-12-20 and last updated on 2026-06-17.

References

https://cpl.thalesgroup.com/fr/software-monetization/security-updates

Affected products (1)

cpe:2.3:a:thalesgroup:sentinel_protection_installer:*:*:*:*:*:*:*:*

More vulnerabilities in Thalesgroup Sentinel Protection Installer

CVE-2021-42808 — Medium (CVSS 6.5): Improper Access Control in Thales Sentinel Protection Installer could allow a local user to escalate privileges.

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