EIP-2026-118792

PRE-CVE

Microsoft IIS 5.0 - User Existence Disclosure (1)

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-118792. PoCs published by JeiAr.

AI-analyzed exploit summary This Perl script exploits an information leak vulnerability in Microsoft IIS by brute-forcing user accounts via dictionary attack. It sends HTTP POST requests to the '_AuthChangeUrl' endpoint and checks the response for a pattern indicating a successful password change, thereby confirming the existence of a user account.

Description

Microsoft IIS 5.0 - User Existence Disclosure (1)

Exploits (1)

exploitdb WORKING POC VERIFIED
by JeiAr · perlremotewindows
https://www.exploit-db.com/exploits/22562

This Perl script exploits an information leak vulnerability in Microsoft IIS by brute-forcing user accounts via dictionary attack. It sends HTTP POST requests to the '_AuthChangeUrl' endpoint and checks the response for a pattern indicating a successful password change, thereby confirming the existence of a user account.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft IIS
No auth needed
Prerequisites: Access to the target IIS server · A wordlist for brute-forcing
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026