Vulnerability record · CVE-2006-4138 · published 14 August 2006

CVE-2006-4138: Microsoft help file viewer vulnerability

Microsoft · Help File Viewer

Multiple unspecified vulnerabilities in Microsoft Windows Help File viewer (winhlp32.exe) allow user-assisted attackers to execute arbitrary code via crafted HLP files.

7.6 CVSS 2.0 High EPSS 20% · top 2.6%

7.6CVSS 2.0 base score

20%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References, 2 tagged exploit

16 Jun 2026Last modified by NVD

Description

Multiple unspecified vulnerabilities in Microsoft Windows Help File viewer (winhlp32.exe) allow user-assisted attackers to execute arbitrary code via crafted HLP files.

AV:N/AC:H/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Help File Viewer Microsoft

References

Link	Tags
http://securityreason.com/securityalert/1382
http://www.securityfocus.com/archive/1/443034/100/0/threaded
http://www.securityfocus.com/archive/1/443039/100/0/threaded
http://www.securityfocus.com/bid/19490	Exploit
http://securityreason.com/securityalert/1382
http://www.securityfocus.com/archive/1/443034/100/0/threaded
http://www.securityfocus.com/archive/1/443039/100/0/threaded
http://www.securityfocus.com/bid/19490	Exploit

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Source: NIST National Vulnerability Database (record CVE-2006-4138), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.