Unrated severityNVD Advisory· Published Feb 12, 2001· Updated Apr 16, 2026
CVE-2001-0004
CVE-2001-0004
Description
IIS 5.0 and 4.0 allows remote attackers to read the source code for executable web server programs by appending "%3F+.htr" to the requested URL, which causes the files to be parsed by the .HTR ISAPI extension, aka a variant of the "File Fragment Reading via .HTR" vulnerability.
Affected products
2- cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4News mentions
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