Vulnerability record · CVE-2007-2999 · published 4 June 2007

CVE-2007-2999: Microsoft windows 2003 server vulnerability

Microsoft · Windows 2003 Server

Microsoft Windows Server 2003, when time restrictions are in effect for user accounts, generates different error messages for failed login attempts with a valid user name than for those with an invalid user name, which allows context-dependent attackers to determine valid Active Directory account names.

1.8 CVSS 2.0 Low EPSS 1.6% · top 24.2%

1.8CVSS 2.0 base score

1.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

16 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Windows 2003 Server Microsoft

References

Link	Tags
http://osvdb.org/36138
http://secunia.com/advisories/25457	Vendor Advisory
http://www.notsosecure.com/folder2/2007/05/27/logon-time-restrictions-in-a-domain-in-windows-server-2003-allows-username
http://www.securityfocus.com/bid/24248
http://osvdb.org/36138
http://secunia.com/advisories/25457	Vendor Advisory
http://www.notsosecure.com/folder2/2007/05/27/logon-time-restrictions-in-a-domain-in-windows-server-2003-allows-username
http://www.securityfocus.com/bid/24248

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-2999), CISA KEV, FIRST EPSS (scores of 2026-10-13). This page is refreshed as NVD updates the record.