CVE-2018-20823
CVSS v3
7.5
HIGH
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The gyroscope on Xiaomi Mi 5s devices allows attackers to cause a denial of service (resonance and false data) via a 20.4 kHz audio signal, aka a MEMS ultrasound attack.
Technical details
- Published
- 2019-04-25
Frequently asked questions
What is CVE-2018-20823?
The gyroscope on Xiaomi Mi 5s devices allows attackers to cause a denial of service (resonance and false data) via a 20.4 kHz audio signal, aka a MEMS ultrasound attack.
Is CVE-2018-20823 actively exploited?
Active exploitation of CVE-2018-20823 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-20823?
CVE-2018-20823 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-20823 affecting your environment?
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