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CVE-2019-18370

CriticalPublished

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...

Published: Oct 23, 2019
Updated: Aug 5, 2024
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

40.3%

Moderate · next 30 days

Percentile: 98.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

UltramanGaiaPoC
A login bypass(CVE-2019-18371) and a command injection vulnerability(CVE-2019-18370) in Xiaomi Router R3G up to versi…
Xiaomi_Mi_WiFi_R3G_Vulnerability_POCPoC
A login bypass(CVE-2019-18371) and a command injection vulnerability(CVE-2019-18370) in Xiaomi Router R3G up to version 2.28.23.

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