CVE-2021-22308

Screen-content disclosure via silent background screenshots

Published Jun 3, 2021 · Updated Aug 3, 2024

Information disclosure in affected Huawei EMUI and Magic UI releases allows local users to capture screen content through malicious apps. Huawei has not published the affected component or the business-logic operation that permits an installed app to continue taking screenshots in the background without notifications. Exploitation requires a malicious app installed on the device and exposes information visible on the screen without causing a system error.

CVSS severity3.3
Low
EPSS probability0.17%
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 affected Huawei EMUI and Magic UI releases allows local users to capture screen content through malicious apps. Huawei has not published the affected component or the business-logic operation that permits an installed app to continue taking screenshots in the background without notifications. Exploitation requires a malicious app installed on the device and exposes information visible on the screen without causing a system error.

The record

CVE
CVE-2021-22308
Published
Jun 3, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1513
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1NVDAV:L/AC:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1513Screen Capture

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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