{"id":"CVE-2020-11684","aliases":["EUVD-2020-4026","GHSA-233h-674c-hxmw"],"status":"published","title":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory...","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01077,"percentile":0.65248,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-212","CWE-326"],"published":"2020-09-14T13:32:01Z","modified":"2026-10-20T13:46:37Z","products":[{"vendor":"linux4sam","product":"at91bootstrap"}],"references":[{"url":"https://github.com/linux4sam/at91bootstrap/commit/45419497309ffbf27c17ea7938499aca99168927","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://labs.f-secure.com/advisories/microchip-at91bootstrap/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-11684"},{"url":"https://github.com/advisories/GHSA-233h-674c-hxmw"}],"sources":{"cve":[{"id":"CVE-2020-11684","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","status":"published","published":"2020-09-14T13:32:01Z","modified":"2024-08-04T11:35:13.558Z","updated_at":"2026-11-02T14:35:57.352161Z"}],"euvd":[{"id":"EUVD-2020-4026","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","status":"published","published":"2020-09-14T13:32:01Z","modified":"2024-08-04T11:35:13Z","updated_at":"2026-11-03T03:07:42.866588Z"}],"ghsa":[{"id":"GHSA-233h-674c-hxmw","title":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory...","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","status":"published","published":"2022-05-24T17:28:13Z","modified":"2023-01-29T05:03:51Z","cwes":["CWE-326"],"updated_at":"2026-11-02T14:45:24.688971Z"}],"nvd":[{"id":"CVE-2020-11684","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","status":"published","published":"2020-09-14T14:15:10.68Z","modified":"2026-06-17T02:50:36.75Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-212"],"updated_at":"2026-11-02T14:06:14.981587Z"}],"osv":[{"id":"CVE-2020-11684","description":"AT91bootstrap before 3.9.2 does not properly wipe encryption and authentication keys from memory before passing control to a less privileged software component. This can be exploited to disclose these keys and subsequently encrypt and sign the next boot stage (such as the bootloader).","status":"published","published":"2020-09-14T14:15:10.68Z","modified":"2026-10-20T13:46:37.69788026Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:14.034736Z"}]}}