{"id":"CVE-2020-22844","aliases":["EUVD-2020-15601","GHSA-767r-m8m9-rf56"],"status":"published","title":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of...","description":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01233,"percentile":0.69204,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401","CWE-772"],"published":"2022-02-28T18:48:44Z","modified":"2026-06-17T03:04:24Z","products":[{"vendor":"mikrotik","product":"routeros"}],"references":[{"url":"https://mikrotik.com/support","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://github.com/colorlight/mikrotik_poc/blob/master/two_vulns.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-22844"},{"url":"https://github.com/advisories/GHSA-767r-m8m9-rf56"}],"sources":{"cve":[{"id":"CVE-2020-22844","description":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.","status":"published","published":"2022-02-28T18:48:44Z","modified":"2024-08-04T14:51:11.045Z","updated_at":"2026-11-02T14:35:46.873079Z"}],"euvd":[{"id":"EUVD-2020-15601","description":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.","status":"published","published":"2022-02-28T18:48:44Z","modified":"2024-08-04T14:51:11Z","updated_at":"2026-11-03T03:07:22.274854Z"}],"ghsa":[{"id":"GHSA-767r-m8m9-rf56","title":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of...","description":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.","status":"published","published":"2022-03-01T00:00:26Z","modified":"2023-02-03T05:06:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:53:52.731364Z"}],"nvd":[{"id":"CVE-2020-22844","description":"A buffer overflow in Mikrotik RouterOS 6.47 allows unauthenticated attackers to cause a denial of service (DOS) via crafted SMB requests.","status":"published","published":"2022-02-28T19:15:08.643Z","modified":"2026-06-17T03:04:24.597Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:06:46.951463Z"}]}}