CVE-2020-14120Network attack vector

Privilege elevation via unchecked third-party app parameters

Published Apr 21, 2022 · Updated Aug 4, 2024

Improper integrity-check validation in Xiaomi MIUI 12.5 allows attackers to elevate privileges through a malicious app. An undisclosed MIUI application accepts parameters supplied by third-party apps without validating their checksum. A user must install the attacker-controlled app; successful exploitation elevates its privileges and can disrupt normal system services.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper integrity-check validation in Xiaomi MIUI 12.5 allows attackers to elevate privileges through a malicious app. An undisclosed MIUI application accepts parameters supplied by third-party apps without validating their checksum. A user must install the attacker-controlled app; successful exploitation elevates its privileges and can disrupt normal system services.

The record

CVE
CVE-2020-14120
Published
Apr 21, 2022
Updated
Aug 4, 2024
Vendor
Xiaomi Corporation
Product
MIUI
Classifications
CWE-354, T1404
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=MIUI version 12.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xiaomi Corporation · MIUIversion=MIUI version 12.5

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-354Improper Validation of Integrity Check Value
T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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