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Vulnerability record · CVE-1999-0945 · published 12 March 2001

CVE-1999-0945: Microsoft exchange server classic buffer overflow vulnerability

Microsoft · Exchange Server

Buffer overflow in Internet Mail Service (IMS) for Microsoft Exchange 5.5 and 5.0 allows remote attackers to conduct a denial of service via AUTH or AUTHINFO commands.

5.0 CVSS 2.0 Medium EPSS 20% · top 2.7% CWE-120 · Classic buffer overflow
5.0CVSS 2.0 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in Internet Mail Service (IMS) for Microsoft Exchange 5.5 and 5.0 allows remote attackers to conduct a denial of service via AUTH or AUTHINFO commands.

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

Affected products

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

References

LinkTags
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ169174
http://www.ciac.org/ciac/bulletins/i-080.shtml PatchVendor Advisory
http://xforce.iss.net/alerts/advise4.php PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/1223 VDB Entry
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ169174
http://www.ciac.org/ciac/bulletins/i-080.shtml PatchVendor Advisory
http://xforce.iss.net/alerts/advise4.php PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/1223 VDB Entry

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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-1999-0945), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.