CVE-2023-23566 Auth bypass in n/a

Critical 9.8 Published 13 Jan 2023 Updated 7 Apr 2025

Attackers can bypass two-step verification to access mailboxes via IMAP or POP3 when adding accounts to third-party services.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-23566?

CVE-2023-23566 is a critical authentication bypass vulnerability in n/a, published on 13 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-276

Which versions are affected by CVE-2023-23566?

It affects 1 product.

Products include Axigen Axigen Mail Server.

How do I fix CVE-2023-23566?

No fix has been published for CVE-2023-23566 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-23566 being exploited?

There is no known exploitation of CVE-2023-23566 in the wild and no public exploit code.

Sources

Also known as GHSA-2v87-869h-xp3x.