Exchange XEXCH50 Remote Buffer Overflow

high Nessus Plugin ID 11889



The remote mail server is prone to a buffer overflow or denial of service attack.


The remote mail server appears to be running a version of the Microsoft Exchange SMTP service that is vulnerable to a flaw in the XEXCH50 extended verb. This flaw can be used to completely crash Exchange 5.5 or to execute arbitrary code on Exchange 2000.


Apply the one of the workarounds listed in the vendor's advisory.

See Also

Plugin Details

Severity: High

ID: 11889

File Name: exchange_xexch50_overflow.nasl

Version: 1.30

Type: remote

Published: 10/16/2003

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 6.2


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 10/15/2003

Exploitable With


Metasploit (MS03-046 Exchange 2000 XEXCH50 Heap Overflow)

Reference Information

CVE: CVE-2003-0714

BID: 8838

MSFT: MS03-046

MSKB: 323166