{"schemaVersion":3,"id":"USN-7866-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"intel-microcode vulnerabilities\n\nBarak Gross discovered that some Intel® Xeon® processors with SGX enabled\ndid not properly handle buffer restrictions. A local authenticated user\ncould potentially use this issue to escalate their privileges.\n(CVE-2025-20053)\n\nAvinash Maddy discovered that some Intel® processors did not properly\nisolate or compartmentalize the stream cache mechanisms. A local\nauthenticated user could potentially use this issue to escalate their\nprivileges. (CVE-2025-20109)\n\nJoseph Nuzman discovered that some Intel® Xeon® processors did not properly\nmanage references to active allocate resources. A local authenticated user\ncould potentially use this issue to cause a denial of service (system\ncrash). (CVE-2025-21090)\n\nIt was discovered that some Intel® Xeon® 6 processors did not properly\nprovide sufficient granularity of access control in the out of band\nmanagement service module (OOB-MSM). An authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-22839)\n\nIt was discovered that some Intel® Xeon® 6 Scalable processors did not\nproperly handle a specific sequence of processor instructions, leading to\nunexpected behavior. A local authenticated user could potentially use this\nissue to escalate their privileges. (CVE-2025-22840)\n\nJoseph Nuzman discovered that some Intel® Xeon® 6 processors with Intel®\nTrust Domain Extensions (Intel® TDX) did not properly handle overlap\nbetween protected memory ranges. A local authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-22889)\n\nAvraham Shalev discovered that some Intel® Xeon® processors did not\nproperly provide sufficient control flow management in the Alias Checking\nTrusted Module (ACTM) firmware. A local authenticated user could\npotentially use this issue to escalate their privileges. (CVE-2025-24305)\n\nAviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6\nprocessors when using Intel® SGX or Intel® TDX did not properly protect\nagainst out-of-bounds writes in the memory subsystem. A local authenticated\nuser could potentially use this issue to escalate their privileges.\n(CVE-2025-26403)\n\nAviv Eisen and Avraham Shalev discovered that some Intel® Xeon® 6\nprocessors when using Intel® SGX or Intel® TDX did not properly implement\nsecurity checks in the DDRIO configuration. A local authenticated user\ncould potentially use this issue to escalate their privileges.\n(CVE-2025-32086)","dates":{"published":"2025-11-10T20:11:08.000Z","modified":"2026-06-25T13:32:31.319Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"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":[],"affected":[{"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":"< 3.20250812.0ubuntu0.16.04.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20250812.0ubuntu0.18.04.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20250812.0ubuntu0.20.04.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20250812.0ubuntu0.22.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20250812.0ubuntu0.24.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.20250812.0ubuntu0.25.10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.20250812.0ubuntu0.16.04.1+esm1 | < 3.20250812.0ubuntu0.18.04.1+esm1 | < 3.20250812.0ubuntu0.20.04.1+esm1 | < 3.20250812.0ubuntu0.22.04.1 | < 3.20250812.0ubuntu0.24.04.1 | < 3.20250812.0ubuntu0.25.10.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7866-1","label":"ubuntu.com/security/notices/USN-7866-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-20053","label":"ubuntu.com/security/CVE-2025-20053","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-20109","label":"ubuntu.com/security/CVE-2025-20109","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-21090","label":"ubuntu.com/security/CVE-2025-21090","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-22839","label":"ubuntu.com/security/CVE-2025-22839","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-22840","label":"ubuntu.com/security/CVE-2025-22840","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-22889","label":"ubuntu.com/security/CVE-2025-22889","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-24305","label":"ubuntu.com/security/CVE-2025-24305","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-26403","label":"ubuntu.com/security/CVE-2025-26403","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-32086","label":"ubuntu.com/security/CVE-2025-32086","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-20053","CVE-2025-20109","CVE-2025-21090","CVE-2025-22839","CVE-2025-22840","CVE-2025-22889","CVE-2025-24305","CVE-2025-26403","CVE-2025-32086"],"downstream":[],"duplicates":[],"related":["CVE-2025-20053","CVE-2025-20109","CVE-2025-21090","CVE-2025-22839","CVE-2025-22840","CVE-2025-22889","CVE-2025-24305","CVE-2025-26403","CVE-2025-32086"]},"timeline":[{"kind":"published","date":"2025-11-10T20:11:08.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T13:32:31.319Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T07:22:32.272Z","stale":false,"partial":false}}