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CVE-2021-41987

HIGHCVSS 8.1/10EPSS 16.23%

Last modified

CVE-2021-41987 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 16.23% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
16.23%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MikrotikRouteros6.46.8
MikrotikRouteros6.47.9
MikrotikRouteros6.47.10

References

Timeline

Published
Last Modified
Status
Modified

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.
How severe is CVE-2021-41987?
CVE-2021-41987 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 16.23% probability of exploitation in the next 30 days.
How do I fix CVE-2021-41987?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41987?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST