{"id":"CVE-2018-3640","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-3640","generatedAt":"2026-10-29T01:47:10.076Z","title":"Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue…","description":"Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read (RSRE), Variant 3a.","published":"2018-05-22T12:29:00.000Z","lastModified":"2026-06-17T01:57:37.000Z","status":"Modified","sourceIdentifier":"secure@intel.com","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":["CWE-203"],"affected":["intel/atom c","intel/atom e","intel/atom z","intel/celeron j","intel/celeron n","intel/core i3","intel/core i5","intel/core i7","intel/core m","intel/pentium","intel/pentium j","intel/pentium silver","intel/xeon e-1105c","intel/xeon e3","intel/xeon e3 1105c v2","intel/xeon e3 1125c v2","intel/xeon e3 1220 v2","intel/xeon e3 1220 v3","intel/xeon e3 1220 v5","intel/xeon e3 1220 v6","intel/xeon e3 12201","intel/xeon e3 12201 v2","intel/xeon e3 1220l v3","intel/xeon e3 1225","intel/xeon e3 1225 v2","intel/xeon e3 1225 v3","intel/xeon e3 1225 v5","intel/xeon e3 1225 v6","intel/xeon e3 1226 v3","intel/xeon e3 1230","intel/xeon e3 1230 v2","intel/xeon e3 1230 v3","intel/xeon e3 1230 v5","intel/xeon e3 1230 v6","intel/xeon e3 1230l v3","intel/xeon e3 1231 v3","intel/xeon e3 1235","intel/xeon e3 1235l v5","intel/xeon e3 1240","intel/xeon e3 1240 v2","intel/xeon e3 1240 v3","intel/xeon e3 1240 v5","intel/xeon e3 1240 v6","intel/xeon e3 1240l v3","intel/xeon e3 1240l v5","intel/xeon e3 1241 v3","intel/xeon e3 1245","intel/xeon e3 1245 v2","intel/xeon e3 1245 v3","intel/xeon e3 1245 v5","intel/xeon e3 1245 v6","intel/xeon e3 1246 v3","intel/xeon e3 1258l v4","intel/xeon e3 1260l","intel/xeon e3 1260l v5","intel/xeon e3 1265l v2","intel/xeon e3 1265l v3","intel/xeon e3 1265l v4","intel/xeon e3 1268l v3","intel/xeon e3 1268l v5"],"epss":{"score":0.07274,"percentile":0.94326,"date":"2026-10-27","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 (7.27%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://support.lenovo.com/us/en/solutions/LEN-22133","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"http://www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"http://www.securityfocus.com/bid/104228","tags":["Third Party Advisory","VDB Entry"],"source":"secure@intel.com"},{"url":"http://www.securitytracker.com/id/1040949","tags":["Third Party Advisory","VDB Entry"],"source":"secure@intel.com"},{"url":"http://www.securitytracker.com/id/1042004","source":"secure@intel.com"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-268644.pdf","source":"secure@intel.com"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf","source":"secure@intel.com"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability","tags":["Vendor Advisory"],"source":"secure@intel.com"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00038.html","source":"secure@intel.com"},{"url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html","source":"secure@intel.com"},{"url":"https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV180013","tags":["Patch","Third Party Advisory","Vendor Advisory"],"source":"secure@intel.com"},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0005","source":"secure@intel.com"},{"url":"https://security.netapp.com/advisory/ntap-20180521-0001/","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03850en_us","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"https://usn.ubuntu.com/3756-1/","source":"secure@intel.com"},{"url":"https://www.debian.org/security/2018/dsa-4273","source":"secure@intel.com"},{"url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html","tags":["Vendor Advisory"],"source":"secure@intel.com"},{"url":"https://www.kb.cert.org/vuls/id/180049","tags":["Third Party Advisory","US Government Resource"],"source":"secure@intel.com"},{"url":"https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0006","source":"secure@intel.com"},{"url":"https://www.synology.com/support/security/Synology_SA_18_23","tags":["Third Party Advisory"],"source":"secure@intel.com"},{"url":"https://www.us-cert.gov/ncas/alerts/TA18-141A","tags":["Third Party Advisory","US Government Resource"],"source":"secure@intel.com"},{"url":"http://support.lenovo.com/us/en/solutions/LEN-22133","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/104228","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1040949","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1042004","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-268644.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00038.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV180013","tags":["Patch","Third Party Advisory","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0005","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20180521-0001/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03850en_us","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3756-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4273","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.kb.cert.org/vuls/id/180049","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0006","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.synology.com/support/security/Synology_SA_18_23","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.us-cert.gov/ncas/alerts/TA18-141A","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-3640","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."}