Nexxt Solutions NCM-X1800 Mesh Router firmware UV1.2.7 and below contains an authenticated command injection vulnerability in the firmware update feature. The /web/um_fileName_set.cgi and /web/um_web_upgrade.cgi endpoints fail to properly sanitize the upgradeFileName parameter, allowing authenticated attackers to execute arbitrary OS commands on the device, resulting in remote code execution.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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