CVE-2000-0457
ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2000-0457- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2000-0457- Updated
- 2026-11-02
EUVDEUVD-2000-0456 No score
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.
- Record
EUVD-2000-0456- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w5j6-fmxr-5fr8 No score
ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file...
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.
- Record
GHSA-w5j6-fmxr-5fr8- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft IIS 4.0/5.0 - Malformed Filename Request | 2000-05-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2000-0457 is a high vulnerability (CVSS 7.5) in Microsoft Internet Information Server, published May 11, 2000. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 52.8%, the 98th percentile. No source names a fixed version.