Format string vulnerability in the AXIMilter module in AXIGEN Mail Server 5.0.2 allows remote attackers to execute arbitrary code via format string specifiers in the CNHO command.

axigen 1.2.6 through 2.0.0b1 does not properly parse login credentials, which allows remote attackers to cause a denial of service (NULL dereference and application crash) via a base64-encoded "*\x00" sequence on the imap port (143/tcp).

Heap-based buffer underflow in axigen 1.2.6 through 2.0.0b1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via certain base64-encoded data on the pop3 port (110/tcp), which triggers an integer overflow.