Unrated severityNVD Advisory· Published Dec 31, 1999· Updated Apr 16, 2026
CVE-1999-1591
CVE-1999-1591
Description
Microsoft Internet Information Services (IIS) server 4.0 SP4, without certain hotfixes released for SP4, does not require authentication credentials under certain conditions, which allows remote attackers to bypass authentication requirements, as demonstrated by connecting via Microsoft Visual InterDev 6.0.
Affected products
2- cpe:2.3:a:microsoft:internet_information_server:4.0:sp4:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_interdev:6.0:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3News mentions
0No linked articles in our index yet.