CVE-2020-5759

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CVSS 3.1

9.8 critical

EPSS

3%p87

Published

Jul 17, 2020 (Jul 17, 2020)

Modified

Jun 17, 2026

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.

Vendors: grandstream
Products: ucm6202 firmware, ucm6204 firmware, ucm6208 firmware
Weakness: CWE-78
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (3.2%)

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