CVE-2001-1319: Microsoft Exchange Server

Medium severity, CVSS 5.0. EPSS: 33.3% chance of exploitation in the next 30 days.

Microsoft Exchange 5.5 2000 allows remote attackers to cause a denial of service (hang) via exceptional BER encodings for the LDAP filter type field, as demonstrated by the PROTOS LDAPv3 test suite.

Affected products

• Microsoft Exchange Server: version 5.5 only; version 2000 only

Published 2001-07-16. Last modified 2026-06-16.