CVE-2001-1243
CVE-2001-1243 is a medium-severity vulnerability in Microsoft Internet Information Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 63% places it in the 99th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 63% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Internet Information Server
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2001-1243?
- 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.
- How severe is CVE-2001-1243?
- CVE-2001-1243 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2001-1243 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 63% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2001-1243?
- CVE-2001-1243 primarily affects Microsoft Internet Information Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2001-1243?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2001-1243 published?
- CVE-2001-1243 was published on 2001-07-04 and last updated on 2026-06-16.
References
- http://www.iss.net/security_center/static/6800.php
- http://www.securityfocus.com/archive/1/194919
- http://www.securityfocus.com/bid/2973
Affected products (2)
- cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:internet_information_services:5.0:*:*:*:*:*:*:*
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