5

CVE-2001-0004: microsoft internet_information_server

CVSS: 5.0v2.0MediumModified
Published 18-09-2001Last modified 08-08-2024
Open JSON

Vulnerability summary

CVE-2001-0004 is a medium (CVSS 5.0) vulnerability in microsoft internet_information_server. EPSS estimates a 28.21% chance of exploitation in the next 30 days, higher than 98% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
28.21%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-09-2001
    PublishedVulnerability first disclosed.
  2. 08-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

28.21%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

0.00 pp

From 28.21% on 18-09-2026

18-09-202618-10-2026
EPSS score
28.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft2 products

1 vendor · 2 products

References

4 links