CVE-2006-6334

Citrix Presentation Server Client <9.230 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-6334. PoCs published by Elazar.

AI-analyzed exploit summary This is a heap buffer overflow exploit targeting the Citrix Presentation Server Client WFICA.OCX ActiveX component. It uses a combination of heap spraying and shellcode execution to achieve remote code execution when the victim closes Internet Explorer.

Description

Heap-based buffer overflow in the SendChannelData function in wfica.ocx in Citrix Presentation Server Client before 9.230 for Windows allows remote malicious web sites to execute arbitrary code via a DataSize parameter that is less than the length of the Data buffer.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Elazar · htmlremotewindows
https://www.exploit-db.com/exploits/5106

This is a heap buffer overflow exploit targeting the Citrix Presentation Server Client WFICA.OCX ActiveX component. It uses a combination of heap spraying and shellcode execution to achieve remote code execution when the victim closes Internet Explorer.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Citrix Presentation Server Client WFICA.OCX version 9.200.44376.0
No auth needed
Prerequisites: Victim must visit a malicious webpage using Internet Explorer with the vulnerable ActiveX control installed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (13)

Core 13
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/23246
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/1995
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/4865
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/30740
Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/21458
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/5106
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/210969
Exploit, Patch, Vendor Advisory x_refsource_misc
http://www.tippingpoint.com/security/advisories/TSRT-06-15.html
Exploit, Patch, Vendor Advisory x_refsource_confirm
http://support.citrix.com/article/CTX111827
Patch, Vendor Advisory vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1017343
Patch, Vendor Advisory x_refsource_confirm
http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/453760/100/0/threaded

Scores

EPSS 0.3440
EPSS Percentile 98.2%

Details

Status published
Products (1)
citrix/presentation_server_client < 9.200
Published Dec 08, 2006
Tracked Since Feb 18, 2026