CVE-2021-33597

Name: CVE-2021-33597
Creator: NVD / NIST
Published: 2021-08-05T20:15:09.213+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2021-33597 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the SAVAPI 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 0.53% chance of exploitation in the next 30 days.

Description

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the SAVAPI 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 (DoS) of the Anti-Virus engine.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.53%

41.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
F-Secure	Client Security	All versions
F-Secure	Linux Security	All versions
F-Secure	Business Suite	All versions
F-Secure	Elements Endpoint Protection	All versions

References

https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameNot Applicable, Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory
https://www.f-secure.com/en/business/programs/vulnerability-reward-program/hall-of-fameNot Applicable, Vendor Advisory
https://www.f-secure.com/en/business/support-and-downloads/security-advisoriesVendor Advisory

Timeline

Published: Aug 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33597?

How severe is CVE-2021-33597?

CVE-2021-33597 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33597?

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-2021-33597?

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

Scan your code now

Source: NVD / NIST