CVE-2001-0004

medium Microsoft
CVSS v3 Base Score
5.0
AV:N/AC:L/Au:N/C:P/I:N/A:N
EPSS Score
74.2%
Exploitation probability in 30 days
Top 1% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
None
Availability
None
Published: February 12, 2001 (9222 days ago)
Last Modified: April 16, 2026
Vendor: Microsoft
Source: NVD

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.

CWE

NVD-CWE-Other

Affected Products

microsoft internet information servermicrosoft internet information services

References

🔗 marc.info 🔗 www.securityfocus.com 🔗 docs.microsoft.com 🔗 exchange.xforce.ibmcloud.com 🔗 marc.info