EIP-2026-118788

PRE-CVE

Microsoft IIS 3.0/4.0 - Upgrade BDIR.HTR

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-118788. PoCs published by rain forest puppy.

AI-analyzed exploit summary This is a writeup describing an information leakage vulnerability in Microsoft IIS 3.0 upgraded to IIS 4.0. The vulnerability allows unauthenticated access to the `bdir.htr` script, which can disclose directory structure information.

Description

Microsoft IIS 3.0/4.0 - Upgrade BDIR.HTR

Exploits (1)

exploitdb WRITEUP VERIFIED
by rain forest puppy · textremotewindows
https://www.exploit-db.com/exploits/20590

This is a writeup describing an information leakage vulnerability in Microsoft IIS 3.0 upgraded to IIS 4.0. The vulnerability allows unauthenticated access to the `bdir.htr` script, which can disclose directory structure information.

Classification
Writeup 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Internet Information Server (IIS) 3.0 upgraded to IIS 4.0
No auth needed
Prerequisites: IIS 3.0 upgraded to IIS 4.0 without removing the /scripts/iisadmin directory
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026