CVE-2021-41987
CVSS v3
8.1
HIGH
EPSS Score
16.2 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In the SCEP Server of RouterOS in certain Mikrotik products, an attacker can trigger a heap-based buffer overflow that leads to remote code execution. The attacker must know the scep_server_name value. This affects RouterOS 6.46.8, 6.47.9, and 6.47.10.
Technical details
- Published
- 2022-03-16
Frequently asked questions
What is CVE-2021-41987?
In the SCEP Server of RouterOS in certain Mikrotik products, an attacker can trigger a heap-based buffer overflow that leads to remote code execution. The attacker must know the scep_server_name value. This affects RouterOS 6.46.8, 6.47.9, and 6.47.10.
Is CVE-2021-41987 actively exploited?
Active exploitation of CVE-2021-41987 has not been confirmed. Its EPSS score was 16.2% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-41987?
CVE-2021-41987 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2021-41987 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 50 free checks/month · Free API key
Other 2021 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).