CVE-2000-0457: microsoft internet_information_server
Vulnerability summary
CVE-2000-0457 is a high (CVSS 7.5) vulnerability in microsoft internet_information_server. EPSS estimates a 52.75% chance of exploitation in the next 30 days, higher than 98.9% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 09-03-2002PublishedVulnerability first disclosed.
- 08-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
52.75%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 52.75% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMicrosoft IIS 4.0/5.0 - Malformed Filename Request
Maturity: weaponized
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft2 products
1 vendor · 2 products
References
4 links
docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-031Vendor AdvisoryX Refsource MS