CVE-2021-33599: F-Secure Atlant

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability affecting F-Secure Antivirus engine was discovered whereby scanning WIM archive file can lead to denial-of-service (infinite loop and freezes AV engine scanner). The vulnerability can be exploit remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.

Affected products

• F-Secure Atlant: affected versions not specified
• F-Secure Cloud Protection For Salesforce: affected versions not specified
• F-Secure Elements Endpoint Protection: affected versions not specified
• F-Secure Linux Security: affected versions not specified

Published 2021-09-07. Last modified 2026-06-17.