{"id":"CVE-2020-5955","aliases":["EUVD-2020-27109","GHSA-mf5j-wgq9-9jj2"],"status":"published","title":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel...","description":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01413,"percentile":0.73061,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-11-03T00:19:13Z","modified":"2026-06-17T03:22:30Z","products":[{"vendor":"insyde","product":"insydeh2o_uefi_bios"}],"references":[{"url":"https://www.insyde.com/products","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://www.insyde.com/security-pledge/SA-2021002","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20220223-0003/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5955"},{"url":"https://github.com/advisories/GHSA-mf5j-wgq9-9jj2"}],"sources":{"cve":[{"id":"CVE-2020-5955","description":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.","status":"published","published":"2021-11-03T00:19:13Z","modified":"2024-08-04T08:47:40.942Z","updated_at":"2026-11-02T14:35:47.56691Z"}],"euvd":[{"id":"EUVD-2020-27109","description":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.","status":"published","published":"2021-11-03T00:19:13Z","modified":"2024-08-04T08:47:40Z","updated_at":"2026-11-03T03:08:04.689205Z"}],"ghsa":[{"id":"GHSA-mf5j-wgq9-9jj2","title":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel...","description":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.","status":"published","published":"2022-05-24T19:19:37Z","modified":"2023-01-30T05:03:30Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:46:50.963031Z"}],"nvd":[{"id":"CVE-2020-5955","description":"An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.","status":"published","published":"2021-11-03T01:15:06.93Z","modified":"2026-06-17T03:22:30.96Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:45.704484Z"}]}}