Microsoft Exchange 5.5/2000 SMTP Service memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as critical has been found in Microsoft Exchange 5.5/2000 (Groupware Software). This affects an unknown code of the component SMTP Service. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 10/15/2003. The weakness was presented 10/15/2003 by João Gouveia with Vodafone as MS03-046 as confirmed bulletin (Technet). The advisory is shared at This vulnerability is uniquely identified as CVE-2003-0714 since 09/02/2003. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by H D Moore and been published 1 weeks after the advisory. The exploit is shared for download at It is declared as highly functional. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 11889 (Exchange XEXCH50 Remote Buffer Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SMTP problems and running in the context r.

Applying the patch MS03-046 is able to eliminate this problem. The bugfix is ready for download at Attack attempts may be identified with Snort ID 2253. In this case the pattern XEXCH50 is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 2437.

The vulnerability is also documented in the databases at X-Force (13480), Tenable (11889) and Exploit-DB (113). Further details are available at See 82, 332, 334 and 427 for similar entries.







CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: H D Moore
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Nessus ID: 11889
Nessus Name: Exchange XEXCH50 Remote Buffer Overflow
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OpenVAS ID: 11889
OpenVAS Name: Exchange XEXCH50 Remote Buffer Overflow
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MetaSploit ID: ms03_046_exchange2000_xexch50.rb
MetaSploit Name: MS03-046 Exchange 2000 XEXCH50 Heap Overflow
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Threat Intelligenceinfo

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Recommended: Patch
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Patch: MS03-046

Snort ID: 2253
Snort Message: SMTP XEXCH50 overflow attempt
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09/02/2003 🔍
10/15/2003 +43 days 🔍
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10/15/2003 +0 days 🔍
10/15/2003 +0 days 🔍
10/16/2003 +0 days 🔍
10/16/2003 +0 days 🔍
10/22/2003 +6 days 🔍
10/22/2003 +0 days 🔍
11/17/2003 +26 days 🔍
03/08/2021 +6321 days 🔍



Advisory: MS03-046
Researcher: João Gouveia
Organization: Vodafone
Status: Confirmed

CVE: CVE-2003-0714 (🔍)
X-Force: 13480
Vulnerability Center: 2659 - [MS03-046] DoS on Internet Mail Service in Exchange Server 5.5, High
SecurityFocus: 8838 - Microsoft Exchange Server Buffer Overflow Vulnerability
Secunia: 10015 - Microsoft Exchange SMTP Extended Request Buffer Overflow, Highly Critical
OSVDB: 2674 - Microsoft Exchange SMTP Extended Request Overflow

scip Labs:
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Created: 10/16/2003 01:07 PM
Updated: 03/08/2021 06:45 PM
Changes: 10/16/2003 01:07 PM (112), 06/26/2019 05:45 PM (3), 03/08/2021 06:45 PM (2)
Complete: 🔍


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