CVE-2021-40836: F-Secure Atlant

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability affecting F-Secure antivirus engine was discovered whereby scanning MS outlook .pst files can lead to denial-of-service. The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.

Affected products

• F-Secure Atlant: any version
• F-Secure Elements Endpoint Detection And Response: any version
• F-Secure Elements Endpoint Protection: any version
• F-Secure Internet Gatekeeper: any version
• F-Secure Linux Security: any version
• F-Secure Linux Security 64: any version

Published 2021-12-22. Last modified 2026-06-17.