CVE-2001-0341

Microsoft FrontPage Server Extensions - Remote Code Execution via Long Registration Request to fp30reg.dll

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2001-0341. PoCs published by NSFOCUS Security Team.

AI-analyzed exploit summary This exploit targets a buffer overflow in FrontPage Server Extensions via 'fp30reg.dll' using chunked encoding to execute arbitrary commands on IIS 5.0 (as IWAM_machinename) or IIS 4.0 (as SYSTEM). It leverages a crafted HTTP POST request with a malicious payload to achieve remote code execution.

Description

Buffer overflow in Microsoft Visual Studio RAD Support sub-component of FrontPage Server Extensions allows remote attackers to execute arbitrary commands via a long registration request (URL) to fp30reg.dll.

Exploits (2)

exploitdb WORKING POC VERIFIED
by NSFOCUS Security Team · remotewindows
https://www.exploit-db.com/exploits/20951

This exploit targets a buffer overflow in FrontPage Server Extensions via 'fp30reg.dll' using chunked encoding to execute arbitrary commands on IIS 5.0 (as IWAM_machinename) or IIS 4.0 (as SYSTEM). It leverages a crafted HTTP POST request with a malicious payload to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft FrontPage Server Extensions (fp30reg.dll) on IIS 4.0/5.0
No auth needed
Prerequisites: Target running vulnerable IIS with FrontPage Server Extensions · Network access to the target web server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by NSFOCUS Security Team · cremotewindows
https://www.exploit-db.com/exploits/20950

This exploit targets a buffer overflow vulnerability in the FrontPage Server Extensions (fp30reg.dll) to execute arbitrary commands on IIS 4.0 (SYSTEM) or IIS 5.0 (IWAM_machinename). The PoC includes shellcode and a crafted HTTP request to trigger the overflow.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft FrontPage Server Extensions (fp30reg.dll) on IIS 4.0/5.0
No auth needed
Prerequisites: Network access to vulnerable IIS server · FrontPage Server Extensions enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/577
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/2906
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=99348216322147&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/6730

Scores

EPSS 0.2789
EPSS Percentile 97.8%

Details

Status published
Products (3)
microsoft/frontpage_server_extensions 2000
microsoft/windows_2000 (3 CPE variants)
microsoft/windows_nt 4.0 (31 CPE variants)
Published Jul 21, 2001
Tracked Since Feb 18, 2026