CVE-2001-1243 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 70.5% (pctl 99)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 70.51% — more likely to be exploited than 99% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2001-07-04 |
| Last modified | 2026-06-16 |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | internet information server |
| microsoft | internet information services |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft IIS 4.0/5.0 - Device File Local Denial of Service | 2001-07-04 |
| exploit-db | Microsoft IIS 4.0/5.0 - Device File Remote Denial of Service | 2001-07-04 |
References
→ the Explorer · watch your stack · NVD