{"id":"CVE-2021-20590","aliases":["EUVD-2021-8008","GHSA-p459-vh9f-cr64"],"status":"published","title":"Improper authentication vulnerability in GOT2000 series GT27 model all versions, GOT2000 series...","description":"Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the \"VNC server\" function is used.","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":"2026-11-12","score":0.01321,"percentile":0.71284,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2021-04-22T18:54:28Z","modified":"2026-06-17T03:34:04Z","products":[{"vendor":"mitsubishi electric","product":"got2000 series gt25 model"},{"vendor":"mitsubishi electric","product":"got2000 series gt27 model"},{"vendor":"mitsubishielectric","product":"got2000_gt25_firmware"},{"vendor":"mitsubishielectric","product":"got2000_gt27_firmware"},{"vendor":"mitsubishielectric","product":"gs2107-wtbd-n_firmware"},{"vendor":"mitsubishielectric","product":"gs2110-wtbd-n_firmware"},{"vendor":"mitsubishielectric","product":"gt2107-wtbd_firmware"},{"vendor":"mitsubishielectric","product":"gt2107-wtsd_firmware"}],"references":[{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-001_en.pdf","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://jvn.jp/vu/JVNVU97615777/index.html","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20590"},{"url":"https://github.com/advisories/GHSA-p459-vh9f-cr64"}],"sources":{"cve":[{"id":"CVE-2021-20590","description":"Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the \"VNC server\" function is used.","status":"published","published":"2021-04-22T18:54:28Z","modified":"2024-08-03T17:45:44.626Z","updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2021-8008","description":"Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the \"VNC server\" function is used.","status":"published","published":"2021-04-22T18:54:28Z","modified":"2024-08-03T17:45:44Z","updated_at":"2026-11-03T03:25:08.888273Z"}],"ghsa":[{"id":"GHSA-p459-vh9f-cr64","title":"Improper authentication vulnerability in GOT2000 series GT27 model all versions, GOT2000 series...","description":"Improper authentication vulnerability in GOT2000 series GT27 model all versions, GOT2000 series GT25 model all versions, GOT2000 series GT21 model GT2107-WTBD all versions ,GOT2000 series GT21 model GT2107-WTSD all versions, GOT SIMPLE series GS21 model GS2110-WTBD-N all versions and GOT SIMPLE series GS21 model GS2107-WTBD-N all versions allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the \"VNC server\" function is used.","status":"published","published":"2022-05-24T17:48:10Z","modified":"2023-01-29T05:06:26Z","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-287"],"updated_at":"2026-11-02T14:46:01.439998Z"}],"nvd":[{"id":"CVE-2021-20590","description":"Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the \"VNC server\" function is used.","status":"published","published":"2021-04-22T19:15:07.363Z","modified":"2026-06-17T03:34:04.55Z","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":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}