{"cve":"CVE-2021-20590","nvd":{"published":"2021-04-22T19:15:07.363","modified":"2026-06-17T03:34:04.550","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-287"],"references":["https://jvn.jp/vu/JVNVU97615777/index.html","https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-001_en.pdf","https://jvn.jp/vu/JVNVU97615777/index.html","https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-001_en.pdf"],"products":["mitsubishielectric:got2000_gt25_firmware","mitsubishielectric:got2000_gt27_firmware","mitsubishielectric:gs2107-wtbd-n_firmware","mitsubishielectric:gs2110-wtbd-n_firmware","mitsubishielectric:gt2107-wtbd_firmware","mitsubishielectric:gt2107-wtsd_firmware"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-20590","score":0.01275,"percentile":0.69939,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}