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CVE-2000-0621

Microsoft Outlook 98 and 2000, and Outlook Express 4.0x and 5.0x, allow remote attackers to read files on the client's system via a malformed HTML message that stores files outside of the cache, aka the "Cache Bypass" vulnerability.

Published: Jul 20, 2000 Modified: Apr 16, 2026

CVSS Metrics

Affected Products (7)

Vendor Product Version
microsoft outlook 97
microsoft outlook 98
microsoft outlook 2000
microsoft outlook_express 4.0
microsoft outlook_express 4.01
microsoft outlook_express 5.0
microsoft outlook_express 5.0.1

GitHub Security Advisory GHSA-vvh2-vwv7-8grx

Microsoft Outlook 98 and 2000, and Outlook Express 4.0x and 5.0x, allow remote attackers to read...

Risk Scores

CVSS Score 7.5 / 10
EPSS Score 5.91%

Top 9% most likely to be exploited

Threat Score 31.8 / 100

Data Sources

NVD EPSS GitHub