Vulnerability Details : CVE-1999-1591
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.
Threat overview for CVE-1999-1591
Top countries where our scanners detected CVE-1999-1591
Top open port discovered on systems with this issue
80
IPs affected by CVE-1999-1591 24
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-1999-1591
Probability of exploitation activity in the next 30 days: 9.56%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 95 % EPSS Score History EPSS FAQ
CVSS scores for CVE-1999-1591
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
References for CVE-1999-1591
Products affected by CVE-1999-1591
- cpe:2.3:a:microsoft:internet_information_server:4.0:sp4:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_interdev:6.0:*:*:*:*:*:*:*