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CVE-2000-0457
ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the ".HTR File Fragment Reading" or "File Fragment Reading via .HTR" vulnerability.
Published: May 11, 2000
Modified: Apr 16, 2026
CVSS Metrics
Affected Products (2)
| Vendor | Product | Version |
|---|---|---|
| microsoft | internet_information_server | 4.0 |
| microsoft | internet_information_services | 5.0 |
GitHub Security Advisory GHSA-w5j6-fmxr-5fr8
ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file...
References (8)
- http://marc.info/?l=bugtraq&m=95810120719608&w=2
- http://www.securityfocus.com/bid/1193
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-031
- https://exchange.xforce.ibmcloud.com/vulnerabilities/4448
- http://marc.info/?l=bugtraq&m=95810120719608&w=2
- http://www.securityfocus.com/bid/1193
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-031
- https://exchange.xforce.ibmcloud.com/vulnerabilities/4448
Risk Scores
CVSS Score
7.5 / 10
EPSS Score
84.39%
Top 1% most likely to be exploited
Threat Score
65.3 / 100
Data Sources
NVD
EPSS
GitHub