CVE-2023-23566: Axigen Mail Server

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A 2-Step Verification problem in Axigen 10.3.3.52 allows an attacker to access a mailbox by bypassing 2-Step Verification when they try to add an account to any third-party webmail service (or add an account to Outlook or Gmail, etc.) with IMAP or POP3 without any verification code.

Affected products

• Axigen Axigen Mail Server: version 10.3.3.52 only

Published 2023-01-13. Last modified 2026-06-17.