{"id":"CVE-2020-5759","aliases":["EUVD-2020-26918","GHSA-559m-xqw9-mvgm"],"status":"published","title":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command...","description":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An authenticated remote attacker can execute commands as the root user by issuing a specially crafted \"unset\" command.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.03204,"percentile":0.88329,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2020-07-17T20:35:51Z","modified":"2026-06-17T03:22:10Z","products":[{"vendor":"grandstream","product":"ucm6202_firmware"},{"vendor":"grandstream","product":"ucm6204_firmware"},{"vendor":"grandstream","product":"ucm6208_firmware"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2020-42","tags":["x_refsource_CONFIRM","x_transferred","Not Applicable"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5759"},{"url":"https://www.tenable.com/cve/CVE-2020-5759","tags":["Third Party Advisory"]},{"url":"https://github.com/advisories/GHSA-559m-xqw9-mvgm"}],"sources":{"cve":[{"id":"CVE-2020-5759","description":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An authenticated remote attacker can execute commands as the root user by issuing a specially crafted \"unset\" command.","status":"published","published":"2020-07-17T20:35:51Z","modified":"2024-08-04T08:39:25.757Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2020-26918","description":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An authenticated remote attacker can execute commands as the root user by issuing a specially crafted \"unset\" command.","status":"published","published":"2020-07-17T20:35:51Z","modified":"2024-08-04T08:39:25Z","updated_at":"2026-11-03T03:08:05.705852Z"}],"ghsa":[{"id":"GHSA-559m-xqw9-mvgm","title":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command...","description":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An authenticated remote attacker can execute commands as the root user by issuing a specially crafted \"unset\" command.","status":"published","published":"2022-05-24T17:23:54Z","modified":"2023-01-29T05:03:33Z","updated_at":"2026-11-02T14:45:20.937669Z"}],"nvd":[{"id":"CVE-2020-5759","description":"Grandstream UCM6200 series firmware version 1.0.20.23 and below is vulnerable to OS command injection via SSH. An authenticated remote attacker can execute commands as the root user by issuing a specially crafted \"unset\" command.","status":"published","published":"2020-07-17T21:15:13.937Z","modified":"2026-06-17T03:22:10.993Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:10.086163Z"}]}}