CVE-2023-23566
NVD-CWE-OtherPublished: January 13, 2023· Updated: Jun 17, 2026
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.
Risk Analysis
Axigen 10.3.3.52 contains a 2-Step Verification bypass flaw that allows attackers to access mailboxes via IMAP or POP3 without providing a verification code. This critical vulnerability carries a CVSS score of 9.8, indicating a high risk of unauthorized account access.
No public exploits are currently known, and the vulnerability is not in the CISA KEV. It is remotely exploitable with low complexity.
Apply the relevant security updates provided by Axigen to address the authentication bypass.
Technical Analysis
CVE-2023-23566 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (8)
Quick Facts
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-23566 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts