{"schemaVersion":3,"id":"CVE-2026-20760","aliases":["ALPINE-CVE-2026-20760","UBUNTU-CVE-2026-20760","DEBIAN-CVE-2026-20760"],"status":"published","duplicateOf":null,"title":null,"description":"Improper handling of overlap between protected memory ranges in some microcode for some Intel(R) Processors within Ring 0: Hypervisor may allow an escalation of privilege. Authorized adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","dates":{"published":"2026-08-11T16:25:59.513Z","modified":"2026-08-12T15:47:05.996Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.8,"severity":"medium","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":6.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Alpine","score":6.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":6.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":6.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":6.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00103,"percentile":0.0092,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00103},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00103,"percentile":0.0092}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00103,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00103,"percentile":0.0092}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-1260","name":"Improper Handling of Overlap Between Protected Memory Ranges","description":"The product allows address regions to overlap, which can result in the bypassing of intended memory protection.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1260.html"}],"affected":[{"vendor":"alpine","product":"intel-ucode","name":"intel-ucode","label":"intel-ucode","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/intel-ucode","purlType":"apk","versions":[{"text":"< 20260812-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 20260812-r0","eol":null,"hubHref":null},{"vendor":"debian","product":"intel-microcode","name":"intel-microcode","label":"intel-microcode","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/intel-microcode","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"intel-microcode","name":"intel-microcode","label":"intel-microcode","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/intel-microcode","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01441.html","label":"intel.com/content/www/us/en/security-center/advisory/intel-sa-01441.html","hostname":"intel.com","tags":["REPORT"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-20760","label":"security.alpinelinux.org/vuln/CVE-2026-20760","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-20760","label":"ubuntu.com/security/CVE-2026-20760","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-20760","label":"www.cve.org/CVERecord?id=CVE-2026-20760","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20260811","label":"github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20260811","hostname":"github.com","tags":["REPORT"]},{"url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01441.html","label":"www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01441.html","hostname":"www.intel.com","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-20760","label":"security-tracker.debian.org/tracker/CVE-2026-20760","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0374","OPENSUSE-SU-2026:11599-1","OPENSUSE-SU-2026:21736-1","SUSE-SU-2026:23449-1","SUSE-SU-2026:23459-1","SUSE-SU-2026:23539-1","SUSE-SU-2026:23602-1","SUSE-SU-2026:3917-1","SUSE-SU-2026:4019-1","SUSE-SU-2026:4025-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11599-1","OPENSUSE-SU-2026:21736-1","SUSE-SU-2026:23449-1","SUSE-SU-2026:23459-1","SUSE-SU-2026:23539-1","SUSE-SU-2026:23602-1","SUSE-SU-2026:3917-1","SUSE-SU-2026:4019-1","SUSE-SU-2026:4025-1"]},"timeline":[{"kind":"published","date":"2026-08-11T16:25:59.513Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-12T15:47:05.996Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":27,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T03:15:54.637Z","stale":false,"partial":false}}