CVE-2020-5759

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.
OS Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
tenableCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 91%
VendorProductVersion
grandstreamucm6202_firmware
𝑥
≤ 1.0.20.23
grandstreamucm6204_firmware
𝑥
≤ 1.0.20.23
grandstreamucm6208_firmware
𝑥
≤ 1.0.20.23
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.tenable.com/security/research/tra-2020-42
https://www.tenable.com/cve/CVE-2020-5759
https://www.tenable.com/security/research/tra-2020-42