CVE-2020-22845

Name: CVE-2020-22845
Creator: NVD / NIST
Published: 2022-02-28T19:15:08.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.20%

Last modified Jun 17, 2026

CVE-2020-22845 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted FTP requests.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted FTP requests.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.20%

64.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Mikrotik	Routeros	6.47

References

https://github.com/colorlight/mikrotik_poc/blob/master/two_vulns.mdThird Party Advisory
https://mikrotik.com/supportProduct
https://github.com/colorlight/mikrotik_poc/blob/master/two_vulns.mdThird Party Advisory
https://mikrotik.com/supportProduct

Timeline

Published: Feb 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22845?

A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted FTP requests.

How severe is CVE-2020-22845?

CVE-2020-22845 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22845?

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-2020-22845?

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

Scan your code now

Source: NVD / NIST