CVE-2006-6334
Heap-based buffer overflow in the SendChannelData function in wfica.ocx in Citrix Presentation Server Client before 9.230 for Windows…
- 6.8MediumCVSS base score
- 36.6%Exploitation in 30 daysEPSS · top 1.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- Citrix Presentation Server Client - 'WFICA.OCX' ActiveX Heap Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 5106remote, windowspublished 12 Feb 2008Verified
References tagged exploit1 reference
- 5106 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 2 days later
· 2 days later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 36.6% · top 1.5% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
References
References13
- 23246 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1995 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- ADV-2006-4865 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- citrix-wfica-bo(30740) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 21458 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 5106 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- VU#210969 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- http://www.tippingpoint.com/security/advisories/TSRT-06-15.html (opens in a new tab)x_refsource_MISCx_transferred
- http://support.citrix.com/article/CTX111827 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://fortconsult.net/files/fortconsult.dk/citrix_advisory_dec2006.pdf (opens in a new tab)x_refsource_MISCx_transferred
- 1017343 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20061207 TSRT-06-15: Citrix Presentation Server Client ActiveX Heap Overflow Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-6317 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-6334)Record last updated .