CVE-2019-13322Public exploitNetwork attack vector

Code execution via unvalidated miui.share downloads

Published Feb 10, 2020 · Updated Aug 4, 2024

Improper input validation in Xiaomi Mi Browser before 10.4.0 allows remote attackers to execute code after opening malicious content. The miui.share handler accepts user-supplied data without proper validation and can download an arbitrary application. Exploitation requires the user to visit a malicious page or open a malicious file, and successful execution runs in that user's context.

CVSS severity8.8
High
EPSS probability2.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Xiaomi Mi Browser before 10.4.0 allows remote attackers to execute code after opening malicious content. The miui.share handler accepts user-supplied data without proper validation and can download an arbitrary application. Exploitation requires the user to visit a malicious page or open a malicious file, and successful execution runs in that user's context.

The record

CVE
CVE-2019-13322
Published
Feb 10, 2020
Updated
Aug 4, 2024
Vendor
Xiaomi Corporation
Product
Mi Browser
Classifications
CWE-356, CWE-20, T1658
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2020CVE 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=Prior to 10.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xiaomi Corporation · Mi Browserversion=Prior to 10.4.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5Zero Day InitiativeCVSS:3.0/AV:N/AC:H/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-356Product UI does not Warn User of Unsafe Actions
CWE-20Improper Input Validation
T1658Exploitation for Client Execution

Public exploit references

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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