{"id":"CVE-2020-27209","aliases":["EUVD-2020-19728","GHSA-q6hh-7xhq-494h"],"status":"published","title":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks...","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01537,"percentile":0.75073,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-05-20T20:16:08Z","modified":"2026-11-09T10:45:17Z","products":[{"vendor":"micro-ecc_project","product":"micro-ecc"}],"references":[{"url":"https://www.aisec.fraunhofer.de/en/FirmwareProtection.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/kmackay/micro-ecc/releases","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://eprint.iacr.org/2021/640","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/kmackay/micro-ecc/commit/1b5f5cea5145c96dd8791b9b2c41424fc74c2172","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27209"},{"url":"https://github.com/advisories/GHSA-q6hh-7xhq-494h"}],"sources":{"cve":[{"id":"CVE-2020-27209","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","status":"published","published":"2021-05-20T20:16:08Z","modified":"2024-08-04T16:11:35.958Z","updated_at":"2026-11-02T14:35:53.552996Z"}],"euvd":[{"id":"EUVD-2020-19728","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","status":"published","published":"2021-05-20T20:16:08Z","modified":"2024-08-04T16:11:35Z","updated_at":"2026-11-03T03:07:13.515696Z"}],"ghsa":[{"id":"GHSA-q6hh-7xhq-494h","title":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks...","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","status":"published","published":"2022-05-24T19:02:49Z","modified":"2023-01-29T05:06:43Z","updated_at":"2026-11-02T14:46:05.419939Z"}],"nvd":[{"id":"CVE-2020-27209","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","status":"published","published":"2021-05-20T21:15:07.653Z","modified":"2026-06-17T03:08:56.517Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:39.25999Z"}],"osv":[{"id":"CVE-2020-27209","description":"The ECDSA operation of the micro-ecc library 1.0 is vulnerable to simple power analysis attacks which allows an adversary to extract the private ECC key.","status":"published","published":"2021-05-20T21:15:07.653Z","modified":"2026-11-10T07:04:20.158565586Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-09T10:53:57.550641Z"}]}}