{"schemaVersion":3,"id":"CVE-2021-26323","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Failure to validate SEV Commands while SNP is active may result in a potential impact to memory integrity.","dates":{"published":"2021-11-16T18:14:43.401Z","modified":"2024-09-16T23:45:40.552Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.8,"severity":"high","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.6,"severity":"medium","vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00246,"percentile":0.14867,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00246},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00246,"percentile":0.14867}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00246,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00246,"percentile":0.14867}]},"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-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"amd","product":"3rd gen amd epyc™","name":"3rd Gen AMD EPYC™","label":"3rd gen amd epyc™","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < MilanPI-SP3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < MilanPI-SP3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/3rd_gen_amd_epycTM"},{"vendor":"amd","product":"epyc_7232p_firmware","name":"epyc 7232p firmware","label":"epyc_7232p_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< romepi-sp3_1.0.0.c","noFixRecorded":false,"fixedIn":null}],"versionsText":"< romepi-sp3_1.0.0.c","eol":null,"hubHref":"/vendor/amd/epyc_7232p"},{"vendor":"amd","product":"epyc_72f3_firmware","name":"epyc 72f3 firmware","label":"epyc_72f3_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_72f3"},{"vendor":"amd","product":"epyc_7313_firmware","name":"epyc 7313 firmware","label":"epyc_7313_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7313"},{"vendor":"amd","product":"epyc_7313p_firmware","name":"epyc 7313p firmware","label":"epyc_7313p_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7313p"},{"vendor":"amd","product":"epyc_7343_firmware","name":"epyc 7343 firmware","label":"epyc_7343_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7343"},{"vendor":"amd","product":"epyc_73f3_firmware","name":"epyc 73f3 firmware","label":"epyc_73f3_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_73f3"},{"vendor":"amd","product":"epyc_7413_firmware","name":"epyc 7413 firmware","label":"epyc_7413_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7413"},{"vendor":"amd","product":"epyc_7443_firmware","name":"epyc 7443 firmware","label":"epyc_7443_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7443"},{"vendor":"amd","product":"epyc_7443p_firmware","name":"epyc 7443p firmware","label":"epyc_7443p_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7443p"},{"vendor":"amd","product":"epyc_7453_firmware","name":"epyc 7453 firmware","label":"epyc_7453_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7453"},{"vendor":"amd","product":"epyc_74f3_firmware","name":"epyc 74f3 firmware","label":"epyc_74f3_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_74f3"},{"vendor":"amd","product":"epyc_7513_firmware","name":"epyc 7513 firmware","label":"epyc_7513_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7513"},{"vendor":"amd","product":"epyc_7543_firmware","name":"epyc 7543 firmware","label":"epyc_7543_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7543"},{"vendor":"amd","product":"epyc_7543p_firmware","name":"epyc 7543p firmware","label":"epyc_7543p_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7543p"},{"vendor":"amd","product":"epyc_75f3_firmware","name":"epyc 75f3 firmware","label":"epyc_75f3_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_75f3"},{"vendor":"amd","product":"epyc_7643_firmware","name":"epyc 7643 firmware","label":"epyc_7643_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7643"},{"vendor":"amd","product":"epyc_7663_firmware","name":"epyc 7663 firmware","label":"epyc_7663_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7663"},{"vendor":"amd","product":"epyc_7713_firmware","name":"epyc 7713 firmware","label":"epyc_7713_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7713"},{"vendor":"amd","product":"epyc_7713p_firmware","name":"epyc 7713p firmware","label":"epyc_7713p_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7713p"},{"vendor":"amd","product":"epyc_7763_firmware","name":"epyc 7763 firmware","label":"epyc_7763_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< milanpi-sp3_1.0.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< milanpi-sp3_1.0.0.4","eol":null,"hubHref":"/vendor/amd/epyc_7763"}],"affectedCount":21,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021","label":"www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021","hostname":"www.amd.com","tags":["X Refsource MISC","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-11-16T18:14:43.401Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T23:45:40.552Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T17:42:55.231Z","stale":false,"partial":false}}