{"id":"CVE-2006-6334","url":"https://www.cyber-defence.io/tools/cve/CVE-2006-6334","generatedAt":"2026-10-27T21:44:00.749Z","title":"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…","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.","published":"2006-12-08T01:28:00.000Z","lastModified":"2026-06-16T22:32:55.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["citrix/presentation server client"],"epss":{"score":0.34826,"percentile":0.98418,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2008-02-12","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":5106,"kind":"exploit","title":"Citrix Presentation Server Client - 'WFICA.OCX' ActiveX Heap Buffer Overflow","url":"https://www.exploit-db.com/exploits/5106","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/5106.html","file":"exploits/windows/remote/5106.html","published":"2008-02-12","added":"2008-02-11","updated":"2016-11-11","author":"Elazar","type":"remote","platform":"windows","port":null,"verified":true,"codes":["CVE-2006-6334"],"tags":null,"aliases":null,"applicationUrl":"http://www.exploit-db.comCitrix_Web_Client_v9.00.exe","screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 34.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://fortconsult.net/files/fortconsult.dk/citrix_advisory_dec2006.pdf","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/23246","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://securityreason.com/securityalert/1995","source":"cve@mitre.org"},{"url":"http://securitytracker.com/id?1017343","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://support.citrix.com/article/CTX111827","tags":["Exploit","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/210969","tags":["US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/archive/1/453760/100/0/threaded","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/21458","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.tippingpoint.com/security/advisories/TSRT-06-15.html","tags":["Exploit","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2006/4865","source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/30740","source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/5106","source":"cve@mitre.org"},{"url":"http://fortconsult.net/files/fortconsult.dk/citrix_advisory_dec2006.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/23246","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://securityreason.com/securityalert/1995","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://securitytracker.com/id?1017343","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.citrix.com/article/CTX111827","tags":["Exploit","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/210969","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/453760/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/21458","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.tippingpoint.com/security/advisories/TSRT-06-15.html","tags":["Exploit","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2006/4865","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/30740","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/5106","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2006-6334","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}