CVE-2021-40837

Name: CVE-2021-40837
Creator: NVD / NIST
Published: 2022-02-09T13:15:08.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2021-40837 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability affecting F-Secure antivirus engine before Capricorn update 2022-02-01_01 was discovered whereby decompression of ACE file causes the scanner service to stop. The vulnerability can be exploited remotely by an attacker. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

A vulnerability affecting F-Secure antivirus engine before Capricorn update 2022-02-01_01 was discovered whereby decompression of ACE file causes the scanner service to stop. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.65%

46.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F-Secure	Atlant	< 2022-02-01_01
F-Secure	Internet Gatekeeper	< 2022-02-01_01
F-Secure	Linux Security	< 2022-02-01_01
F-Secure	Security Cloud	< 2022-02-01_01
F-Secure	Elements Endpoint Detection And Response	< 2022-02-01_01
F-Secure	Elements Endpoint Protection	< 2022-02-01_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-advisories/cve-2021-40837Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisories/cve-2021-40837Vendor Advisory

Timeline

Published: Feb 9, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40837?

How severe is CVE-2021-40837?

CVE-2021-40837 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40837?

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-2021-40837?

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

Scan your code now

Source: NVD / NIST