CVE-2023-43767: F-Secure Atlant

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Certain WithSecure products allow Denial of Service via the aepack archive unpack handler. This affects WithSecure Client Security 15, WithSecure Server Security 15, WithSecure Email and Server Security 15, WithSecure Elements Endpoint Protection 17 and later, WithSecure Client Security for Mac 15, WithSecure Elements Endpoint Protection for Mac 17 and later, Linux Security 64 12.0 , Linux Protection 12.0, and WithSecure Atlant (formerly F-Secure Atlant) 1.0.35-1.

Affected products

• F-Secure Atlant: version 1.0.35-1 only
• F-Secure Client Security: version 15.00 only
• F-Secure Elements Endpoint Protection: from 17.0
• F-Secure Email And Server Security: version 15.00 only
• F-Secure Linux Protection: version 12.0 only
• F-Secure Linux Security 64: version 12.0 only
• F-Secure Server Security: version 15.00 only

Published 2023-09-22. Last modified 2026-06-17.