What’s Vulnerable › Vulnerabilities

CVE-2020-20225

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-07 · updated 2026-06-17
• Weakness: CWE-617

Description

Mikrotik RouterOs before 6.47 (stable tree) suffers from an assertion failure vulnerability in the /nova/bin/user process. An authenticated remote attacker can cause a Denial of Service due to an assertion failure via a crafted packet.

Affected products

• MikroTik RouterOS: before 6.47 — fixed in 6.47

How to fix

Upgrade to a fixed version: MikroTik RouterOS 6.47. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2021/May/12
• https://mikrotik.com/
• http://seclists.org/fulldisclosure/2021/May/12
• https://mikrotik.com/

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