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CVSS: 5.0EPSS: 9%CPEs: 2EXPL: 0

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. • 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 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVSS: 5.0EPSS: 74%CPEs: 1EXPL: 1

Microsoft Exchange Server 5.5 does not properly handle a MIME header with a blank charset specified, which allows remote attackers to cause a denial of service via a charset="" command, aka the "Malformed MIME Header" vulnerability. • http://www.securityfocus.com/bid/1869 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-082 https://exchange.xforce.ibmcloud.com/vulnerabilities/5448 •

CVSS: 5.0EPSS: 0%CPEs: 3EXPL: 0

Microsoft Outlook and Outlook Express allow remote attackers to cause a denial of service by sending email messages with blank fields such as BCC, Reply-To, Return-Path, or From. • http://archives.neohapsis.com/archives/bugtraq/2000-06/0045.html http://www.securityfocus.com/bid/1333 •

CVSS: 5.0EPSS: 0%CPEs: 2EXPL: 0

Microsoft Exchange Server 5.5 and 5.0 does not properly handle (1) malformed NNTP data, or (2) malformed SMTP data, which allows remote attackers to cause a denial of service (application error). • https://docs.microsoft.com/en-us/security-updates/securitybulletins/1998/ms98-007 •

CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0

Modifications to ACLs (Access Control Lists) in Microsoft Exchange 5.5 do not take effect until the directory store cache is refreshed. • https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0993 • CWE-665: Improper Initialization •