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TI-2021-17762 Aliases CVE-2021-40837GHSA-2whc-p527-687m

Denial-of-service (DoS) in F-Secure endpoint protection products on Windows and Mac…

Priority LOW 25Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

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.

Why it matters now

EPSS 0.00662 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
F-SecureF-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 CloudAll Version—No fix listedCNA
  • 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 VendorF-Secure Affected All Version Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:f-secure:atlant:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:a:f-secure:internet_gatekeeper:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:a:f-secure:linux_security:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:a:f-secure:security_cloud:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:a:f-secure:elements_endpoint_detection_and_response:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:a:f-secure:elements_endpoint_protection:*:*:*:*:*:*:*:*before 2022-02-01_01VulnerableF-Secure
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:f-secure:atlant:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:a:f-secure:internet_gatekeeper:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:a:f-secure:linux_security:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:a:f-secure:security_cloud:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:a:f-secure:elements_endpoint_detection_and_response:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:a:f-secure:elements_endpoint_protection:*:*:*:*:*:*:*:* Versions before 2022-02-01_01 Vulnerable ·F-Secure
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40837
  2. 2026-10-03 Alias added: GHSA-2whc-p527-687m
  3. 2026-10-06 EPSS moved to the 50th–90th percentile

References

Advisory 2

  • TI-2023-23465 Certain WithSecure products allow Denial of Service via the aepack archive unpack handler. CVSS 3.1HIGH 7.5
  • TI-2023-23463 Certain WithSecure products allow Denial of Service in the aeelf component. CVSS 3.1HIGH 7.5
  • TI-2023-23460 Certain WithSecure products allow Denial of Service (infinite loop). CVSS 3.1HIGH 7.5
  • TI-2023-23464 Certain WithSecure products allow Local privilege escalation via the lhz archive unpack… CVSS 3.1HIGH 7.8
  • TI-2023-26941 Certain WithSecure products allow a Denial of Service because there is an unpack handler… CVSS 3.1HIGH 7.5
  • TI-2023-23459 Certain WithSecure products allow Denial of Service via a fuzzed PE32 file. CVSS 3.1HIGH 7.5
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences