CVE-2000-0216: Microsoft email clients in Outlook, Exchange, and Windows Messaging automatically respond to Read Receipt and Delivery R

Published n/a Updated 2026-08-21T04:30:56.652Z

Summary

Microsoft email clients in Outlook, Exchange, and Windows Messaging automatically respond to Read Receipt and Delivery Receipt tags, which could allow an attacker to flood a mail system with responses by forging a Read Receipt request that is redirected to a large distribution list.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:56.652Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References