Unrated severityNVD Advisory· Published Dec 31, 1999· Updated Jun 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
3cpe:2.3:a:microsoft:internet_information_server:4.0:sp4:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:microsoft:internet_information_server:4.0:sp4:*:*:*:*:*:*
- (no CPE)range: =4.0 SP4
- cpe:2.3:a:microsoft:visual_interdev:6.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3News mentions
0No linked articles in our index yet.