CVE-2000-0567: Buffer overflow in Microsoft Outlook and Outlook Express allows remote attackers to execute arbitrary comma...

Security readout for executives and security teams

This is an old Microsoft Outlook and Outlook Express email parsing flaw. A specially malformed email header could trigger a buffer overflow and potentially run attacker-controlled commands on the recipient’s system. Business risk depends almost entirely on whether legacy Outlook or Outlook Express clients are still present. Likely limited to environments that still run legacy Microsoft Outlook or Outlook Express versions covered by MS00-043. The supplied data does not identify exact vulnerable versions, CPEs, or supported product status. Prioritize investigation if legacy Windows mail clients remain in the environment. For modern estates without Outlook Express or old Outlook versions, this is mainly a legacy hygiene issue rather than an immediate enterprise-wide emergency. Mitigation focus: Review Microsoft MS00-043 for official patch, workaround, and affected-version guidance.; Inventory endpoints for Microsoft Outlook and Outlook Express installations.; Retire, replace, or isolate unsupported legacy mail clients handling untrusted email..

Prepared

Jul 12, 2026, 00:24 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.