CVE-2020-0017

Cross-user text disclosure via unvalidated user IDs

Published Feb 13, 2020 · Updated Aug 4, 2024

Information disclosure in Android 8.0 through 10 allows local users to expose primary-user text to secondary-user apps through TextClassifier. System UI ran as user 0, while TextClassifier requests crossed process boundaries without consistently carrying and validating the initiating user ID. Exploitation requires user interaction; a secondary-user app can receive selected text and trigger predicted actions across user boundaries.

CVSS severity4.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Android 8.0 through 10 allows local users to expose primary-user text to secondary-user apps through TextClassifier. System UI ran as user 0, while TextClassifier requests crossed process boundaries without consistently carrying and validating the initiating user ID. Exploitation requires user interaction; a secondary-user app can receive selected text and trigger predicted actions across user boundaries.

The record

CVE
CVE-2020-0017
Published
Feb 13, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 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=Android-8.0 Android-8.1 Android-9 Android-10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-8.0 Android-8.1 Android-9 Android-10

Published CVSS scores

3.3NIST NVDAV:L/AC:M/Au:N/C:P/I:P/A:N
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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