Denial-of-Service (DoS) Vulnerability

published 2021-06-21 5y ago modified 2026-06-17 4mo ago also EUVD-2021-20259

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Linux Security whereby the FSAVD component used in certain F-Secure products can crash while scanning larger packages/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.

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Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

F-Secure F-Secure Products

Classification

Weakness

CWE-476 NULL Pointer Dereference

References

f-secure.com /en/business/support-and-downloads/security-advisories
vendor-advisory
f-secure.com /en/business/programs/vulnerability-reward-program/hall-of-fame
product

Sources

CVE List CVE-2021-33572
NVD CVE-2021-33572

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