{"id":"CVE-2020-35609","aliases":["EUVD-2020-23275","GHSA-8xr7-5cxh-6x35"],"status":"published","title":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft...","description":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01337,"percentile":0.71431,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74","CWE-835"],"published":"2020-12-22T19:24:55Z","modified":"2026-06-17T03:14:01Z","products":[{"vendor":"microsoft","product":"azure_sphere"}],"references":[{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1117","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1117","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35609"},{"url":"https://github.com/advisories/GHSA-8xr7-5cxh-6x35"}],"sources":{"cve":[{"id":"CVE-2020-35609","description":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.","status":"published","published":"2020-12-22T19:24:55Z","modified":"2024-08-04T17:09:14.086Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2020-23275","description":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.","status":"published","published":"2020-12-22T19:24:55Z","modified":"2024-08-04T17:09:14Z","updated_at":"2026-11-03T03:07:05.848444Z"}],"ghsa":[{"id":"GHSA-8xr7-5cxh-6x35","title":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft...","description":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.","status":"published","published":"2022-05-24T17:37:08Z","modified":"2023-01-29T05:05:07Z","cwes":["CWE-74"],"updated_at":"2026-11-02T14:45:43.003111Z"}],"nvd":[{"id":"CVE-2020-35609","description":"A denial-of-service vulnerability exists in the asynchronous ioctl functionality of Microsoft Azure Sphere 20.05. A sequence of specially crafted ioctl calls can cause a denial of service. An attacker can write shellcode to trigger this vulnerability.","status":"published","published":"2020-12-22T20:15:12.427Z","modified":"2026-06-17T03:14:01.047Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}