{"id":"CVE-2005-0109","url":"https://www.cyber-defence.io/tools/cve/CVE-2005-0109","generatedAt":"2026-10-27T17:30:14.967Z","title":"Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium and other processors, allows local users to use a malicious thread to create covert channels, monitor the execution of other threads, and obtain…","description":"Hyper-Threading technology, as used in FreeBSD and other operating systems that are run on Intel Pentium and other processors, allows local users to use a malicious thread to create covert channels, monitor the execution of other threads, and obtain sensitive information such as cryptographic keys, via a timing attack on memory cache misses.","published":"2005-03-05T05:00:00.000Z","lastModified":"2026-06-16T22:10:32.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.6,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"},"cwe":[],"affected":["freebsd/freebsd","redhat/enterprise linux","redhat/enterprise linux desktop","redhat/fedora core","sco/openserver","sco/unixware","sun/solaris","ubuntu/ubuntu linux"],"epss":{"score":0.00509,"percentile":0.43171,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txt","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2","tags":["Mailing List"],"source":"cve@mitre.org"},{"url":"http://marc.info/?l=freebsd-security&m=110994370429609&w=2","tags":["Mailing List"],"source":"cve@mitre.org"},{"url":"http://marc.info/?l=openbsd-misc&m=110995101417256&w=2","tags":["Mailing List"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/15348","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/18165","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"http://securitytracker.com/id?1013967","tags":["Patch","Third Party Advisory","VDB Entry","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"http://www.daemonology.net/hyperthreading-considered-harmful/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.daemonology.net/papers/htt.pdf","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/911878","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2005-476.html","tags":["Not Applicable"],"source":"cve@mitre.org"},{"url":"http://www.redhat.com/support/errata/RHSA-2005-800.html","tags":["Not Applicable"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/12724","tags":["Patch","Third Party Advisory","VDB Entry","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2005/0540","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2005/3002","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.24/SCOSA-2005.24.txt","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=freebsd-hackers&m=110994026421858&w=2","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=freebsd-security&m=110994370429609&w=2","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=openbsd-misc&m=110995101417256&w=2","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/15348","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/18165","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://securitytracker.com/id?1013967","tags":["Patch","Third Party Advisory","VDB Entry","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://sunsolve.sun.com/search/document.do?assetkey=1-26-101739-1","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www-1.ibm.com/support/docview.wss?uid=isg1SSRVHMCHMC_C081516_754","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.daemonology.net/hyperthreading-considered-harmful/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.daemonology.net/papers/htt.pdf","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/911878","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2005-476.html","tags":["Not Applicable"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.redhat.com/support/errata/RHSA-2005-800.html","tags":["Not Applicable"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/12724","tags":["Patch","Third Party Advisory","VDB Entry","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2005/0540","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2005/3002","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9747","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2005-0109","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."}