How severe is CVE-2020-26200?

CVE-2020-26200 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-26200 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26200?

CVE-2020-26200 primarily affects Kaspersky Endpoint Security. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-26200?

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

When was CVE-2020-26200 published?

CVE-2020-26200 was published on 2021-02-26 and last updated on 2026-06-17.

CVE-2020-26200

CVE-2020-26200 is a medium-severity vulnerability in Kaspersky Endpoint Security with a CVSS 3.x base score of 6.8. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Kaspersky Endpoint Security
Published: 2021-02-26
Last modified: 2026-06-17

Description

A component of Kaspersky custom boot loader allowed loading of untrusted UEFI modules due to insufficient check of their authenticity. This component is incorporated in Kaspersky Rescue Disk (KRD) and was trusted by the Authentication Agent of Full Disk Encryption in Kaspersky Endpoint Security (KES). This issue allowed to bypass the UEFI Secure Boot security feature. An attacker would need physical access to the computer to exploit it. Otherwise, local administrator privileges would be required to modify the boot loader component.

Frequently asked questions

What is CVE-2020-26200?: A component of Kaspersky custom boot loader allowed loading of untrusted UEFI modules due to insufficient check of their authenticity. This component is incorporated in Kaspersky Rescue Disk (KRD) and was trusted by the Authentication Agent of Full Disk Encryption in Kaspersky Endpoint Security (KES). This issue allowed to bypass the UEFI Secure Boot security feature. An attacker would need physical access to the computer to exploit it. Otherwise, local administrator privileges would be required to modify the boot loader component.
How severe is CVE-2020-26200?: CVE-2020-26200 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-26200 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26200?: CVE-2020-26200 primarily affects Kaspersky Endpoint Security. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-26200?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26200 published?: CVE-2020-26200 was published on 2021-02-26 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:kaspersky:endpoint_security:10:sp2_mr2:*:*:*:*:*:*
cpe:2.3:a:kaspersky:endpoint_security:10:sp2_mr3:*:*:*:*:*:*
cpe:2.3:a:kaspersky:endpoint_security:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky:endpoint_security:11.0.1:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky:endpoint_security:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky:rescue_disk:*:*:*:*:*:*:*:*

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