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CVE-2000-1006

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.

Published: Dec 11, 2000 Modified: Jun 16, 2026
NVD-CWE-noinfo

CVSS Metrics

Affected Products (1)

Vendor Product Version
microsoft exchange_server 5.5

GitHub Security Advisory GHSA-mcv5-j53r-62hw

Microsoft Exchange Server 5.5 does not properly handle a MIME header with a blank charset...

Risk Scores

CVSS Score 5.0 / 10
EPSS Score 14.79%

Top 4% most likely to be exploited

Threat Score 24.4 / 100

Data Sources

NVD EPSS GitHub