What’s Vulnerable › Vulnerabilities

CVE-1999-0945

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-05-07 · updated 2026-06-16
• Weakness: CWE-120

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.

Affected products

• Microsoft Exchange Server: 5.0, 5.5

References

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

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