CVE-2020-20221
CVSS v3
6.5
MEDIUM
EPSS Score
2.9 %
exploit probability, as of 2026-10-03
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Mikrotik RouterOs before 6.44.6 (long-term tree) suffers from an uncontrolled resource consumption vulnerability in the /nova/bin/cerm process. An authenticated remote attacker can cause a Denial of Service due to overloading the systems CPU.
Technical details
- Published
- 2021-07-21
Frequently asked questions
What is CVE-2020-20221?
Mikrotik RouterOs before 6.44.6 (long-term tree) suffers from an uncontrolled resource consumption vulnerability in the /nova/bin/cerm process. An authenticated remote attacker can cause a Denial of Service due to overloading the systems CPU.
Is CVE-2020-20221 actively exploited?
Active exploitation of CVE-2020-20221 has not been confirmed. Its EPSS score was 2.9% on 2026-10-03, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-20221?
CVE-2020-20221 has a CVSS v3 base score of 6.5 (MEDIUM severity).
Is CVE-2020-20221 affecting your environment?
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