EIP-2026-118790

PRE-CVE

Microsoft IIS 5.0 - '500-100.asp' Server Name Spoof

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-118790. PoCs published by Lympex.

AI-analyzed exploit summary This PoC exploits a server name spoofing vulnerability in IIS 5.x and 6.0 by sending a crafted HTTP request with 'localhost' in the Host header, potentially revealing sensitive ASP code via the 500-100.asp error page. The code establishes a socket connection, sends the malicious request, and saves the server response to a file.

Description

Microsoft IIS 5.0 - '500-100.asp' Server Name Spoof

Exploits (1)

exploitdb WORKING POC VERIFIED
by Lympex · cremotewindows
https://www.exploit-db.com/exploits/1178

This PoC exploits a server name spoofing vulnerability in IIS 5.x and 6.0 by sending a crafted HTTP request with 'localhost' in the Host header, potentially revealing sensitive ASP code via the 500-100.asp error page. The code establishes a socket connection, sends the malicious request, and saves the server response to a file.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Internet Information Services (IIS) 5.x, 6.0
No auth needed
Prerequisites: Network access to the target IIS server
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026