CVE-2021-36719: Cybonet Mail Secure

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

PineApp - Mail Secure - The attacker must be logged in as a user to the Pineapp system. The attacker exploits the vulnerable nicUpload.php file to upload a malicious file,Thus taking over the server and running remote code.

Affected products

• Cybonet Mail Secure: before 5.2.1 (fixed in 5.2.1)

Published 2021-12-08. Last modified 2026-06-17.