Skip to content
Fencer Vulns
medium 4.6

CVE-2021-40837 json

Denial-of-Service (DoS) Vulnerability

published 2022-02-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27994

cvss
4.6
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 51%
public exploits
0
none known

Summary

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.

Patch / fix

  • 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

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% 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 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • F-Secure F-Secure endpoint protection products on Windows and 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.