How severe is CVE-2020-6021?

CVE-2020-6021 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-6021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-6021?

CVE-2020-6021 affects Checkpoint Endpoint Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-6021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-6021 published?

CVE-2020-6021 was published on 2020-12-03 and last updated on 2026-06-17.

CVE-2020-6021

CVE-2020-6021 is a high-severity vulnerability in Checkpoint Endpoint Security with a CVSS 3.x base score of 7.8. 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-427.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.4
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Checkpoint Endpoint Security
Published: 2020-12-03
Last modified: 2026-06-17

Description

Check Point Endpoint Security Client for Windows before version E84.20 allows write access to the directory from which the installation repair takes place. Since the MS Installer allows regular users to run the repair, an attacker can initiate the installation repair and place a specially crafted DLL in the repair folder which will run with the Endpoint client’s privileges.

Frequently asked questions

What is CVE-2020-6021?: Check Point Endpoint Security Client for Windows before version E84.20 allows write access to the directory from which the installation repair takes place. Since the MS Installer allows regular users to run the repair, an attacker can initiate the installation repair and place a specially crafted DLL in the repair folder which will run with the Endpoint client’s privileges.
How severe is CVE-2020-6021?: CVE-2020-6021 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-6021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-6021?: CVE-2020-6021 affects Checkpoint Endpoint Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-6021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-6021 published?: CVE-2020-6021 was published on 2020-12-03 and last updated on 2026-06-17.

References

https://supportcontent.checkpoint.com/solutions?id=sk170512

Affected products (1)

cpe:2.3:a:checkpoint:endpoint_security:*:*:*:*:*:windows:*:*

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