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Vulnerability record · CVE-2002-0698 · published 12 August 2002

CVE-2002-0698: Microsoft exchange server classic buffer overflow vulnerability

Microsoft · Exchange Server

Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response.

7.5 CVSS 2.0 High EPSS 20% · top 2.6% CWE-120 · Classic buffer overflow
7.5CVSS 2.0 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20759 Broken Link
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ326322
http://www.iss.net/security_center/static/9658.php Broken Link
http://www.securityfocus.com/bid/5306 Third Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-037 PatchVendor Advisory
http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20759 Broken Link
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ326322
http://www.iss.net/security_center/static/9658.php Broken Link
http://www.securityfocus.com/bid/5306 Third Party AdvisoryVDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-037 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2002-0698), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.