Is CVE-2000-0621 in the CISA KEV catalog?

No. CVE-2000-0621 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2000-0621?

CVE-2000-0621 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2000-0621?

CVE-2000-0621 has an EPSS score of 22.31% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2000-0621

HIGHEPSS 97th pctl

7.5

CVSS v2

NVD

Description

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 v2 Vector

No CVSS vector data available.

Exploit Intelligence

22.31%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

http://www.cert.org/advisories/CA-2000-14.html
http://www.securityfocus.com/bid/1501
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-046
https://exchange.xforce.ibmcloud.com/vulnerabilities/5013

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.