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Fencer Vulns
medium 4.6

CVE-2021-44747 json

Denial-of-Service (DoS) Vulnerability

published 2022-03-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31562

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Patch / fix

  • f-secure atlant 2022-02-23_01
  • f-secure elements_endpoint_protection 2022-02-23_01
  • f-secure linux_security 2022-02-23_01
  • f-secure security_cloud 2022-02-23_01

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • F-Secure F-Secure endpoint protection products on Mac, F-Secure Linux Security (32-bit), F-Secure Linux Security 64, F-Secure Atlant, F-Secure Internet Gatekeeper & F-Secure Security Cloud

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.