CVE-2020-8994

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-03-05 · updated 2026-06-17
Weakness: CWE-287

Description

An issue was discovered on XIAOMI AI speaker MDZ-25-DT 1.34.36, and 1.40.14. Attackers can get root shell by accessing the UART interface and then they can read Wi-Fi SSID or password, read the dialogue text files between users and XIAOMI AI speaker, use Text-To-Speech tools pretend XIAOMI speakers' voice achieve social engineering attacks, eavesdrop on users and record what XIAOMI AI speaker hears, delete the entire XIAOMI AI speaker system, modify system files, stop voice assistant service, start the XIAOMI AI speaker’s SSH service as a backdoor

Affected products

Mi Mdz-25-Dt Firmware: 1.34.36, 1.40.14

References

https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.md
https://www.usenix.org/sites/default/files/soups2018posters-lau.pdf
https://youtu.be/yCadG38yZW8
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.md
https://www.usenix.org/sites/default/files/soups2018posters-lau.pdf
https://youtu.be/yCadG38yZW8

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