Is CVE-2001-1243 in the CISA KEV catalog?

No. CVE-2001-1243 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2001-1243?

CVE-2001-1243 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2001-1243?

CVE-2001-1243 has an EPSS score of 63.19% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2001-1243

MEDIUMEPSS 99th pctl

5.0

CVSS v2

NVD

Description

Scripting.FileSystemObject in asp.dll for Microsoft IIS 4.0 and 5.0 allows local or remote attackers to cause a denial of service (crash) via (1) creating an ASP program that uses Scripting.FileSystemObject to open a file with an MS-DOS device name, or (2) remotely injecting the device name into ASP programs that internally use Scripting.FileSystemObject.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

63.19%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.