CVE-2002-0419

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 37.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2002-08-12 · updated 2026-06-16
Weakness: CWE-200

Description

Information leaks in IIS 4 through 5.1 allow remote attackers to obtain potentially sensitive information or more easily conduct brute force attacks via responses from the server in which (2) in certain configurations, the server IP address is provided as the realm for Basic authentication, which could reveal real IP addresses that were obscured by NAT, or (3) when NTLM authentication is used, the NetBIOS name of the server and its Windows NT domain are revealed in response to an Authorization request. NOTE: this entry originally contained a vector (1) in which the server reveals whether it supports Basic or NTLM authentication through 401 Access Denied error messages. CVE has REJECTED this vector; it is not a vulnerability because the information is already available through legitimate use, since authentication cannot proceed without specifying a scheme that is supported by both the client and the server.

Affected products

Microsoft Internet Information Server: 4.0, 4.0-alpha
Microsoft IIS: 5.0

References

Get alerted when CVE-2002-0419 or the next vulnerability affects your stack