{"schemaVersion":3,"id":"CVE-2022-40246","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot mode) and influence the subsequent boot stages. This can lead to the mitigations bypassing, physical memory contents disclosure, discovery of any secrets from any Virtual Machines (VMs) and bypassing memory isolation and confidential computing boundaries. Additionally, an attacker can build a payload which can be injected into the SMRAM memory. This issue affects: Module name: SbPei SHA256: d827182e5f9b7a9ff0b9d3e232f7cfac43b5237e2681e11f005be627a49283a9 Module GUID: c1fbd624-27ea-40d1-aa48-94c3dc5c7e0d","dates":{"published":"2022-09-20T17:35:33.274Z","modified":"2025-05-28T18:41:09.998Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.2,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.2,"severity":"high","vector":"CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.2,"severity":"high","vector":"CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0049,"percentile":0.40882,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.0049},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00473,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0049,"percentile":0.40882}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0049,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0049,"percentile":null},{"d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