CVE-2006-1591: Microsoft Windows 2000

Medium severity, CVSS 5.1. EPSS: 7.1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Microsoft Windows Help winhlp32.exe allows user-assisted attackers to execute arbitrary code via crafted embedded image data in a .hlp file.

Affected products

• Microsoft Windows 2000: any version
• Microsoft Windows 2003 Server: version enterprise only; version r2 only; version standard only; version web only
• Microsoft Windows Nt: version 4.0 only
• Microsoft Windows XP: any version

Published 2006-04-03. Last modified 2026-06-16.