CVE-2000-0621

NONECVSS 0.0

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 90.7%
KEV: Not listed

Published

July 20, 2000

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://www.cert.org/advisories/CA-2000-14.html
cve@mitrehttp://www.securityfocus.com/bid/1501
cve@mitrehttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-046
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/5013
af854a3a-2127-422b-91ae-364da2661108http://www.cert.org/advisories/CA-2000-14.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/1501
af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-046
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/5013

Data Freshness Timeline

(refreshed 12× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
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2026-05-26 13:41 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2000-0621?

CVE-2000-0621 is a none vulnerability published on July 20, 2000. 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.

When was CVE-2000-0621 disclosed?

CVE-2000-0621 was first published in the National Vulnerability Database on July 20, 2000, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2000-0621 actively exploited?

CVE-2000-0621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2000-0621?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2000-0621, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2000-0621

📅 Published

🔄 Last Modified

🔗 References (8)