CVE-2021-44747

Name: CVE-2021-44747
Creator: NVD / NIST
Published: 2022-03-01T12:15:07.493+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2021-44747 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the Fmlib component used in certain F-Secure products can crash while scanning fuzzed files. The exploit can be triggered remotely by an attacker. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the Fmlib component used in certain F-Secure products can crash while scanning fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.61%

44.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F-Secure	Atlant	< 2022-02-23_01
F-Secure	Elements Endpoint Protection	< 2022-02-23_01
F-Secure	Internet Gatekeeper	<= 2022-02-23_01
F-Secure	Linux Security	< 2022-02-23_01
F-Secure	Security Cloud	< 2022-02-23_01

References

https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory

Timeline

Published: Mar 1, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44747?

How severe is CVE-2021-44747?

CVE-2021-44747 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44747?

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-2021-44747?

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

Scan your code now

Source: NVD / NIST