The installation of Microsoft Exchange 2000 before Rev.

published 2001-01-09 25y ago modified 2026-06-16 4mo ago also EUVD-2000-1124

cvss: 7.5; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.0%; EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

The installation of Microsoft Exchange 2000 before Rev. A creates a user account with a known password, which could allow attackers to gain privileges, aka the "Exchange User Account" vulnerability.

Patch / fix

links 2

docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-088 advisory
securityfocus.com/bid/1958 advisory

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Exploit prediction

5.02% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-14).

CVSS scores

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

Classification

Weakness

CWE-798 Use of Hard-coded Credentials

Technology feeds

Microsoft Exchange rss critical rss

References

docs.microsoft.com /en-us/security-updates/securitybulletins/2000/ms00-088
vendor-advisory, patch
securityfocus.com /bid/1958
vdb-entry, patch, third-party-advisory, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/5537
vdb-entry

Sources

CVE List CVE-2000-1139
NVD CVE-2000-1139

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