CVE-2023-21454

Lock-screen text disclosure via exposed context menu

Published Mar 16, 2023 · Updated Feb 26, 2025

Improper authorization in Samsung Keyboard on Android 13 before SMR Mar-2023 Release 1 allows physically proximate attackers to read text history. The lock-screen context menu exposes the keyboard's stored text history without requiring device authorization. Physical access to a locked affected device is required; the documented consequence is limited to reading keyboard history.

CVSS severity2.4
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Samsung Keyboard on Android 13 before SMR Mar-2023 Release 1 allows physically proximate attackers to read text history. The lock-screen context menu exposes the keyboard's stored text history without requiring device authorization. Physical access to a locked affected device is required; the documented consequence is limited to reading keyboard history.

The record

CVE
CVE-2023-21454
Published
Mar 16, 2023
Updated
Feb 26, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-285, T1409
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record 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 13 <SMR Mar-2023 Release 1

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Android 13 <SMR Mar-2023 Release 1

Published CVSS scores

2.4Samsung MobileCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1409Stored Application Data

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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