{"id":"CVE-2021-33887","aliases":["EUVD-2021-20560","GHSA-9h8m-8m65-p47h"],"status":"published","title":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows...","description":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows an attacker with physical access to boot into a modified kernel/ramdisk without unlocking the bootloader.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00267,"percentile":0.18995,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-345"],"published":"2021-06-15T18:45:45Z","modified":"2026-06-17T03:55:20Z","products":[{"vendor":"onepeloton","product":"ttr01_firmware"}],"references":[{"url":"https://fccid.io/2AA3N-TTR01","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.mcafee.com/blogs/consumer/mobile-and-iot-security/is-your-peloton-spinning-up-malware/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://youtu.be/RLjXfvb0ADw","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33887"},{"url":"https://github.com/advisories/GHSA-9h8m-8m65-p47h"}],"sources":{"cve":[{"id":"CVE-2021-33887","description":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows an attacker with physical access to boot into a modified kernel/ramdisk without unlocking the bootloader.","status":"published","published":"2021-06-15T18:45:45Z","modified":"2024-08-04T00:05:52.227Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20560","description":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows an attacker with physical access to boot into a modified kernel/ramdisk without unlocking the bootloader.","status":"published","published":"2021-06-15T18:45:45Z","modified":"2024-08-04T00:05:52Z","updated_at":"2026-11-03T03:24:33.318275Z"}],"ghsa":[{"id":"GHSA-9h8m-8m65-p47h","title":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows...","description":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows an attacker with physical access to boot into a modified kernel/ramdisk without unlocking the bootloader.","status":"published","published":"2022-05-24T19:05:19Z","modified":"2023-01-29T05:06:33Z","cwes":["CWE-345"],"updated_at":"2026-11-02T14:46:03.455343Z"}],"nvd":[{"id":"CVE-2021-33887","description":"Insufficient verification of data authenticity in Peloton TTR01 up to and including PTV55G allows an attacker with physical access to boot into a modified kernel/ramdisk without unlocking the bootloader.","status":"published","published":"2021-06-15T20:15:14.083Z","modified":"2026-06-17T03:55:20.347Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:06:54.892562Z"}]}}