CVE-2006-3086: Microsoft Hyperlink Object Library

High severity, CVSS 9.3. EPSS: 56.5% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the HrShellOpenWithMonikerDisplayName function in Microsoft Hyperlink Object Library (hlink.dll) allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long hyperlink, as demonstrated using an Excel worksheet with a long link in Unicode, aka "Hyperlink COM Object Buffer Overflow Vulnerability." NOTE: this is a different issue than CVE-2006-3059.

Affected products

• Microsoft Hyperlink Object Library: any version

Published 2006-06-19. Last modified 2026-06-16.