{"id":"CVE-2020-26933","aliases":["EUVD-2020-19463","GHSA-988w-p627-h6w6"],"status":"published","title":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification...","description":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AC:H/AV:L/A:N/C:H/I:H/PR:H/S:C/UI:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.003,"percentile":0.22979,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-665"],"published":"2020-11-18T16:50:32Z","modified":"2026-06-17T03:08:34Z","products":[{"vendor":"trustedcomputinggroup","product":"trusted_platform_module"}],"references":[{"url":"https://trustedcomputinggroup.org/about/security/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://trustedcomputinggroup.org/wp-content/uploads/TCGVRT004-Advisory-FINAL.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26933"},{"url":"https://github.com/advisories/GHSA-988w-p627-h6w6"}],"sources":{"cve":[{"id":"CVE-2020-26933","description":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.","status":"published","published":"2020-11-18T16:50:32Z","modified":"2024-08-04T16:03:23.184Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AC:H/AV:L/A:N/C:H/I:H/PR:H/S:C/UI:N","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-19463","description":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.","status":"published","published":"2020-11-18T16:50:32Z","modified":"2024-08-04T16:03:23Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AC:H/AV:L/A:N/C:H/I:H/PR:H/S:C/UI:N","level":"high"}],"updated_at":"2026-11-03T03:07:14.105511Z"}],"ghsa":[{"id":"GHSA-988w-p627-h6w6","title":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification...","description":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.","status":"published","published":"2022-05-24T17:34:29Z","modified":"2023-01-29T05:04:48Z","cwes":["CWE-665"],"updated_at":"2026-11-02T14:45:38.359776Z"}],"nvd":[{"id":"CVE-2020-26933","description":"Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.","status":"published","published":"2020-11-18T17:15:11.68Z","modified":"2026-06-17T03:08:34.393Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-665"],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}