CVE-2006-3086

Microsoft Hyperlink Object Library - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-3086. PoCs published by kingcope.

AI-analyzed exploit summary This exploit generates a malicious Excel file with an overflow in the URL field, triggering a buffer overflow vulnerability in Microsoft Excel. The PoC uses the Spreadsheet::WriteExcel Perl module to create a file with an excessively long URL string.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by kingcope · perldoswindows
https://www.exploit-db.com/exploits/1927

This exploit generates a malicious Excel file with an overflow in the URL field, triggering a buffer overflow vulnerability in Microsoft Excel. The PoC uses the Spreadsheet::WriteExcel Perl module to create a file with an excessively long URL string.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Excel (versions prior to the patch for CVE-2006-3086)
No auth needed
Prerequisites: Perl with Spreadsheet::WriteExcel module · Victim interaction to open the malicious Excel file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (18)

Core 18
Core References
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/438057/100/0/threaded
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/438093/100/0/threaded
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/438373/100/0/threaded
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/394444
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/438156/100/0/threaded
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/442724/100/0/threaded
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/2431
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A999
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/438096/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/26666
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/27224
Patch, Vendor Advisory x_refsource_misc
http://www.tippingpoint.com/security/advisories/TSRT-06-10.html
Mailing List mailing-list x_refsource_fulldisc
http://marc.info/?l=full-disclosure&m=115067840426070&w=2
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/20748
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/18500
Patch vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016339

Scores

EPSS 0.5646
EPSS Percentile 98.9%

Details

CWE
CWE-119
Status published
Products (1)
microsoft/hyperlink_object_library
Published Jun 19, 2006
Tracked Since Feb 18, 2026