HOMEVULNERABILITIESCVE-2020-8994
MEDIUM

CVE-2020-8994

CWE-287Published: March 5, 2020· Updated: Jun 17, 2026

6.8
CVSS v3.1

Official 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

NVD Source

Technical Analysis

CVE-2020-8994 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

mi2 product(s)
mdz-25-dt firmwaremdz-25-dt
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (6)

→
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.mdExploit · Third Party Advisory
→
https://www.usenix.org/sites/default/files/soups2018posters-lau.pdfTechnical Description · Third Party Advisory
→
https://youtu.be/yCadG38yZW8Exploit · Third Party Advisory
→
https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2020-8994.mdExploit · Third Party Advisory
→
https://www.usenix.org/sites/default/files/soups2018posters-lau.pdfTechnical Description · Third Party Advisory
→
https://youtu.be/yCadG38yZW8Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-8994
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedMar 5, 2020

Related CVEs (CWE-287)

CVE-2008-1262
10.0
CVE-2021-21538
10.0
CVE-2017-13995
10.0
CVE-2018-6667
10.0
CVE-2025-9265
10.0
CVE-2010-4232
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8994 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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