{"id":"CVE-2021-32471","aliases":["EUVD-2021-19324","GHSA-wqw3-6p9p-84x8"],"status":"published","title":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing...","description":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing Machine allows program users to execute arbitrary code via crafted data. For example, a tape head may have an unexpected location after the processing of input composed of As and Bs (instead of 0s and 1s). NOTE: the discoverer states \"this vulnerability has no real-world implications.\"","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00849,"percentile":0.58384,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2021-05-10T04:49:54Z","modified":"2026-06-17T03:53:01Z","exploits":[{"source":"pocgithub","id":"intrinsic-propensity/turing-machine","title":"intrinsic-propensity/turing-machine","date":"2021-01-21","url":"https://github.com/intrinsic-propensity/turing-machine"}],"products":[{"vendor":"mit","product":"universal_turing_machine"}],"references":[{"url":"https://arxiv.org/abs/2105.02124","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/intrinsic-propensity/turing-machine","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32471"},{"url":"https://github.com/advisories/GHSA-wqw3-6p9p-84x8"}],"sources":{"cve":[{"id":"CVE-2021-32471","description":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing Machine allows program users to execute arbitrary code via crafted data. For example, a tape head may have an unexpected location after the processing of input composed of As and Bs (instead of 0s and 1s). NOTE: the discoverer states \"this vulnerability has no real-world implications.\"","status":"published","published":"2021-05-10T04:49:54Z","modified":"2024-08-03T23:17:29.546Z","updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19324","description":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing Machine allows program users to execute arbitrary code via crafted data. For example, a tape head may have an unexpected location after the processing of input composed of As and Bs (instead of 0s and 1s). NOTE: the discoverer states \"this vulnerability has no real-world implications.\"","status":"published","published":"2021-05-10T04:49:54Z","modified":"2024-08-03T23:17:29Z","updated_at":"2026-11-03T03:24:36.852603Z"}],"ghsa":[{"id":"GHSA-wqw3-6p9p-84x8","title":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing...","description":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing Machine allows program users to execute arbitrary code via crafted data. For example, a tape head may have an unexpected location after the processing of input composed of As and Bs (instead of 0s and 1s). NOTE: the discoverer states \"this vulnerability has no real-world implications.\"","status":"published","published":"2022-05-24T19:01:56Z","modified":"2023-01-29T05:06:13Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:58.601163Z"}],"nvd":[{"id":"CVE-2021-32471","description":"Insufficient input validation in the Marvin Minsky 1967 implementation of the Universal Turing Machine allows program users to execute arbitrary code via crafted data. For example, a tape head may have an unexpected location after the processing of input composed of As and Bs (instead of 0s and 1s). NOTE: the discoverer states \"this vulnerability has no real-world implications.\"","status":"published","published":"2021-05-10T05:15:06.64Z","modified":"2026-06-17T03:53:01.42Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","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-20"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}