{"id":"CVE-2020-25082","aliases":["EUVD-2020-17774","GHSA-c3qr-cx32-288c"],"status":"published","title":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0...","description":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.","severity":{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00207,"percentile":0.10853,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203"],"published":"2021-08-10T15:28:05Z","modified":"2026-06-17T03:06:21Z","products":[{"vendor":"nuvoton","product":"npct75x_firmware"}],"references":[{"url":"https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25082"},{"url":"https://github.com/advisories/GHSA-c3qr-cx32-288c"}],"sources":{"cve":[{"id":"CVE-2020-25082","description":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.","status":"published","published":"2021-08-10T15:28:05Z","modified":"2024-08-04T15:26:09.29Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low","assessor":"cna"}],"updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-17774","description":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.","status":"published","published":"2021-08-10T15:28:05Z","modified":"2024-08-04T15:26:09Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N","level":"low"}],"updated_at":"2026-11-03T03:07:18.658916Z"}],"ghsa":[{"id":"GHSA-c3qr-cx32-288c","title":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0...","description":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.","status":"published","published":"2022-05-24T19:10:34Z","modified":"2023-01-30T05:01:16Z","cwes":["CWE-203"],"updated_at":"2026-11-02T14:46:22.480874Z"}],"nvd":[{"id":"CVE-2020-25082","description":"An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.","status":"published","published":"2021-08-10T17:15:07.087Z","modified":"2026-06-17T03:06:21.03Z","cvss":[{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":3.8,"vector":"CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","level":"low","assessor":"primary"},{"version":"2.0","score":1.9,"vector":"AV:L/AC:M/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:06:44.292752Z"}]}}