{"id":"CVE-2019-3977","aliases":["EUVD-2019-13584","GHSA-94gr-5fp3-387v"],"status":"published","title":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where...","description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01059,"percentile":0.6475,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-494"],"published":"2019-10-28T21:34:37Z","modified":"2026-06-17T02:35:59Z","products":[{"vendor":"mikrotik","product":"routeros"},{"vendor":"tenable","product":"mikrotik routeros"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2019-46","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-3977"},{"url":"https://github.com/advisories/GHSA-94gr-5fp3-387v"}],"sources":{"cve":[{"id":"CVE-2019-3977","description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","status":"published","published":"2019-10-28T21:34:37Z","modified":"2024-08-04T19:26:27.646Z","cwes":["CWE-494"],"updated_at":"2026-11-02T14:20:23.048861Z"}],"euvd":[{"id":"EUVD-2019-13584","description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","status":"published","published":"2019-10-28T21:34:37Z","modified":"2024-08-04T19:26:27Z","updated_at":"2026-11-03T03:06:54.362786Z"}],"ghsa":[{"id":"GHSA-94gr-5fp3-387v","title":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where...","description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","status":"published","published":"2022-05-24T17:00:04Z","modified":"2024-04-04T02:36:07Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-494"],"updated_at":"2026-11-02T14:56:09.967552Z"}],"nvd":[{"id":"CVE-2019-3977","description":"RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into \"upgrading\" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.","status":"published","published":"2019-10-29T19:15:20.407Z","modified":"2026-06-17T02:35:59.123Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":8.5,"vector":"AV:N/AC:L/Au:N/C:N/I:C/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-494"],"updated_at":"2026-11-02T14:05:32.982925Z"}]}}