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HIGH

CVE-2020-20021

CVSS v3

7.5

HIGH

EPSS Score

1.0 %

exploit probability, as of 2026-10-04

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

An issue discovered in MikroTik Router v6.46.3 and earlier allows attacker to cause denial of service via misconfiguration in the SSH daemon.

Technical details

Published
2023-07-12

Frequently asked questions

What is CVE-2020-20021?

An issue discovered in MikroTik Router v6.46.3 and earlier allows attacker to cause denial of service via misconfiguration in the SSH daemon.

Is CVE-2020-20021 actively exploited?

Active exploitation of CVE-2020-20021 has not been confirmed. Its EPSS score was 1.0% on 2026-10-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-20021?

CVE-2020-20021 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2020-20021 affecting your environment?

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