Skip to content
Fencer Vulns
high 7.5

CVE-2000-0621 in the critical feed json

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 malform…

published 2000-07-20 26 y ago modified 2026-06-16 4 mo ago also EUVD-2000-0617

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
22.1%
EPSS 22.1% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

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.

Patch / fix

Exploit prediction

22.14% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.