CVE-2007-0427

Microsoft HTML Help Workshop - Stack-based Buffer Overflow via Long HLP Field in OPTIONS Section

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2007-0427. PoCs published by porkythepig.

AI-analyzed exploit summary This is a functional exploit for CVE-2007-0427, targeting a buffer overflow vulnerability in Microsoft Help Workshop v4.03.0002. It crafts a malicious .HPJ project file that, when opened, executes arbitrary code via a carefully constructed payload with hardcoded API addresses for various Windows versions.

Description

Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a help project (.HPJ) file with a long HLP field in the OPTIONS section.

Exploits (2)

exploitdb WORKING POC VERIFIED
by porkythepig · c++localwindows
https://www.exploit-db.com/exploits/3159

This is a functional exploit for CVE-2007-0427, targeting a buffer overflow vulnerability in Microsoft Help Workshop v4.03.0002. It crafts a malicious .HPJ project file that, when opened, executes arbitrary code via a carefully constructed payload with hardcoded API addresses for various Windows versions.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Help Workshop v4.03.0002
No auth needed
Prerequisites: Victim must open the malicious .HPJ file in Microsoft Help Workshop
devstral-2 · analyzed Feb 18, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by porkythepig · c++localwindows
https://www.exploit-db.com/exploits/3149

This is a functional exploit for CVE-2007-0352, targeting a buffer overflow vulnerability in Microsoft Help Workshop v4.03.0002. It generates a malicious .cnt file that triggers arbitrary code execution when opened, spawning a specified process (default: notepad.exe).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Microsoft Help Workshop v4.03.0002
No auth needed
Prerequisites: Victim must open the malicious .cnt file in Microsoft Help Workshop
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (6)

Core 6
Core References
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/22135
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://osvdb.org/31899
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/2177
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/23862
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/457436/100/0/threaded

Scores

EPSS 0.5526
EPSS Percentile 98.1%

Details

Status published
Products (1)
microsoft/html_help_workshop 4.03.0002
Published Jan 23, 2007
Tracked Since Feb 18, 2026