Buffer overflow in Citadel SMTP server 7.10 and earlier allows remote attackers to execute arbitrary code via a long RCPT TO command, which is not properly handled by the makeuserkey function. NOTE: some of these details were obtained from third party information.

QK SMTP Server 3 allows remote attackers to cause a denial of service (daemon crash) via a long (1) HELO, (2) MAIL FROM, or (3) RCPT TO command; or (4) a long string in the message sent after the DATA command; possibly a related issue to CVE-2006-5551.

The password reset feature in the Spam Quarantine HTTP interface for MailMarshal SMTP 6.2.0.x before 6.2.1 allows remote attackers to modify arbitrary account information via a UserId variable with a large amount of trailing whitespace followed by a malicious value, which triggers SQL buffer truncation due to length inconsistencies between variables.

Directory traversal vulnerability in Marshal MailMarshal SMTP 5.x, 6.x, and 2006, and MailMarshal for Exchange 5.x, allows remote attackers to write arbitrary files via ".." sequences in filenames in an ARJ compressed archive.

Stack-based buffer overflow in QK SMTP 3.01 and earlier might allow remote attackers to execute arbitrary code via a long argument to the RCPT TO command.

Absolute path traversal vulnerability in the get functionality in Anti-Spam SMTP Proxy (ASSP) allows remote authenticated users to read arbitrary files via (1) C:\ (Windows drive letter), (2) UNC, and possibly other types of paths in the file parameter.

Clearswift MAILsweeper for SMTP before 4.3.20 and MAILsweeper for Exchange before 4.3.20 allows remote attackers to bypass the "text analysis", possibly bypassing SPAM and other filters, by sending an e-mail specifying a non-existent or unrecognized character set.

Clearswift MAILsweeper for SMTP before 4.3.20 and MAILsweeper for Exchange before 4.3.20 allows remote attackers to cause a denial of service via (1) non-ASCII characters in a reverse DNS lookup result from a Received header, which leads to a Receiver service stop, and (2) unspecified vectors involving malformed messages, which causes "unpredictable behavior" that prevents the Security service from processing more messages.

Buffer overflow in BL4 SMTP Server 0.1.4 and earlier allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long argument to the (1) EHLO, (2) MAIL FROM, and (3) RCPT TO commands.

Format string vulnerability in the SMTP server for McAfee WebShield 4.5 MR2 and earlier allows remote attackers to execute arbitrary code via format strings in the domain name portion of a destination address, which are not properly handled when a bounce message is constructed.