EIP-2026-117289

PRE-CVE

HTML Help Workshop 4.74 - '.hhp' Local Buffer Overflow (Metasploit)

Title source: legacy

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-117289. PoCs published by loneferret.

AI-analyzed exploit summary This Metasploit module exploits a stack-based buffer overflow in HTML Help Workshop 4.74 via a maliciously crafted .hhp file. It leverages a CALL EDI instruction at 0x00401F93 to redirect execution to shellcode, achieving arbitrary code execution.

Description

HTML Help Workshop 4.74 - '.hhp' Local Buffer Overflow (Metasploit)

Exploits (1)

exploitdb WORKING POC VERIFIED

by loneferret · rubylocalwindows

https://www.exploit-db.com/exploits/10335

View Code ZIP pw:eip

This Metasploit module exploits a stack-based buffer overflow in HTML Help Workshop 4.74 via a maliciously crafted .hhp file. It leverages a CALL EDI instruction at 0x00401F93 to redirect execution to shellcode, achieving arbitrary code execution.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: HTML Help Workshop 4.74

No auth needed

Prerequisites: Victim must open the malicious .hhp file

MITRE ATT&CK

T1203 - Exploitation for Client Execution T1059 - Command and Scripting Interpreter

devstral-2 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve

Tracked Since Feb 18, 2026