{"cve":"CVE-2021-36767","nvd":{"published":"2021-10-08T15:15:09.037","modified":"2026-06-17T03:59:08.037","status":"Modified","description":"In Digi RealPort through 4.10.490, authentication relies on a challenge-response mechanism that gives access to the server password, making the protection ineffective. An attacker may send an unauthenticated request to the server. The server will reply with a weakly-hashed version of the server's access password. The attacker may then crack this hash offline in order to successfully login to the server.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-916"],"references":["https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txt","https://raw.githubusercontent.com/reidmefirst/vuln-disclosure/main/2021-02.txt"],"products":["digi:6350-sr_firmware","digi:cm_firmware","digi:connect_es_firmware","digi:connectport_lts_8\\/16\\/32_firmware","digi:connectport_ts_8\\/16_firmware","digi:one_ia_firmware","digi:one_iap_firmware","digi:one_iap_haz_firmware","digi:passport_integrated_console_server_firmware","digi:portserver_ts_firmware","digi:portserver_ts_m_mei_firmware","digi:portserver_ts_mei_firmware","digi:portserver_ts_mei_hardened_firmware","digi:portserver_ts_p_mei_firmware","digi:realport","digi:transport_wr11_xt_firmware","digi:wr21_firmware","digi:wr31_firmware","digi:wr44_r_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-36767","score":0.00687,"percentile":0.52692,"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."]}