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Vulnerability record · CVE-2019-18370 · published 23 October 2019

CVE-2019-18370: Millet router 3g firmware os command injection vulnerability

MMi · Millet Router 3g Firmware

An issue was discovered on Xiaomi Mi WiFi R3G devices before 2.28.23-stable. The backup file is in tar.gz format. After uploading, the application uses the tar zxf command to decompress, so one can control the contents of the files in the decompressed directory. In addition, the application's sh script for testing upload and download speeds reads a URL list from /tmp/speedtest_urls.xml, and there is a command injection vulnerability, as demonstrated by api/xqnetdetect/netspeed.

9.8 CVSS 3.1 Critical EPSS 40% · top 1.4% CWE-78 · OS command injection
9.8CVSS 3.1 base score, v2 7.5
40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered on Xiaomi Mi WiFi R3G devices before 2.28.23-stable. The backup file is in tar.gz format. After uploading, the application uses the tar zxf command to decompress, so one can control the contents of the files in the decompressed directory. In addition, the application's sh script for testing upload and download speeds reads a URL list from /tmp/speedtest_urls.xml, and there is a command injection vulnerability, as demonstrated by api/xqnetdetect/netspeed.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/UltramanGaia/Xiaomi_Mi_WiFi_R3G_Vulnerability_POC/blob/master/remote_command_execution_vulnerability. ExploitThird Party Advisory
https://github.com/UltramanGaia/Xiaomi_Mi_WiFi_R3G_Vulnerability_POC/blob/master/remote_command_execution_vulnerability. ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-18370), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.