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CVE-2000-0621

28
FAUCET Score

CVE-2000-0621 describes a "Cache Bypass" vulnerability affecting Microsoft Outlook 98, 2000, and Outlook Express 4.0x and 5.0x. This flaw allows remote attackers to read arbitrary files on a user's system through a specially crafted HTML email that bypasses the cache. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to partial confidentiality, integrity, and availability compromise. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
97CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:97:*:*:*:*:*:*:*
98CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:98:*:*:*:*:*:*:*
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook:2000:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express:4.0:*:*:*:*:*:*:*
4.01CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express:4.01:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
22.31%
Probability of exploitation in next 30 days
EPSS Percentile
97.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2231 is in the 96th percentile among its peer group of 51,455 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2000/ms00-046
exchange.xforce.ibmcloud.com / vulnerabilities/5013
cert.org / advisories/CA-2000-14.html
PatchThird Party AdvisoryUS Government Resource
securityfocus.com / bid/1501
PatchVendor Advisory