CVE-1999-1033: Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can

Published n/a Updated 2026-08-21T04:30:46.319Z

Summary

Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:46.319Z · 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