CVE-2021-0443

Cross-profile screenshot disclosure via retained service context

Published Apr 13, 2021 · Updated Aug 3, 2024

Race condition in ScreenshotHelper in Google Cloud Android 8.1 through 11 allows local users to read screenshots across profiles. ScreenshotHelper keeps its screenshot service alive when the active user changes, so an in-progress screenshot can be saved using the previous profile's context. Exploitation requires user interaction and a profile switch while the screenshot interface remains active; the consequence is limited to disclosure of the captured image.

CVSS severity4.7
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in ScreenshotHelper in Google Cloud Android 8.1 through 11 allows local users to read screenshots across profiles. ScreenshotHelper keeps its screenshot service alive when the active user changes, so an in-progress screenshot can be saved using the previous profile's context. Exploitation requires user interaction and a profile switch while the screenshot interface remains active; the consequence is limited to disclosure of the captured image.

The record

CVE
CVE-2021-0443
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-362, T1513
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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-8.1 Android-9 Android-10 Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-8.1 Android-9 Android-10 Android-11

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/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.

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1513Screen Capture

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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