CVE-2024-20853

Sandbox file write via unverified broadcast intents

Published Apr 2, 2024 · Updated Aug 26, 2025

Improper intent verification in Samsung Electronics Galaxy Themes before 5.3.05.2 allows local users to write files in its sandbox. A ThemeStore broadcast receiver accepts intents without verifying the caller, then performs file writes using the application sandbox access. A malicious application on the same Galaxy device can trigger the receiver without privileges, limiting direct writes to the ThemeStore sandbox.

CVSS severity5.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper intent verification in Samsung Electronics Galaxy Themes before 5.3.05.2 allows local users to write files in its sandbox. A ThemeStore broadcast receiver accepts intents without verifying the caller, then performs file writes using the application sandbox access. A malicious application on the same Galaxy device can trigger the receiver without privileges, limiting direct writes to the ThemeStore sandbox.

The record

CVE
CVE-2024-20853
Published
Apr 2, 2024
Updated
Aug 26, 2025
Vendor
Samsung Electronics
Product
Galaxy Themes
Classifications
CWE-925
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 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?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics · Galaxy ThemesAffected versions are unavailable in this record.

Published CVSS scores

5.1Samsung MobileCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
5.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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-925Improper Verification of Intent by Broadcast Receiver

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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