Auth bypass in Mi Mdz-25-Dt
CVE-2020-8994
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
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Mi Mdz-25-Dt
- Mi Mdz-25-Dt Firmware — versions 1.34.36, 1.40.14
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.usenix.org/sites/default/files/soups2018posters-lau.pdf (Technical Description, Third Party Advisory)
- github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.md (Exploit, Third Party Advisory)
- youtu.be/yCadG38yZW8 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8994?
- CVE-2020-8994 is a medium-severity vulnerability in Mi Mdz-25-Dt, classified under Improper Authentication. CVSS score: 6.8/10. Published 2020-03-05.
- How severe is CVE-2020-8994?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2020-8994 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.