CVE-2021-25353

Private file access via empty PendingIntent hijacking

Published Mar 25, 2021 · Updated Aug 3, 2024

Improper authorization in Samsung Electronics Galaxy Themes before 5.2.00.1215 allows local users to read and write private app files. The app creates an empty PendingIntent that a local attacker can hijack to perform file operations in Galaxy Themes private directories without the required permission. Exploitation requires local app-level access on a compatible Samsung Galaxy device, and the documented impact is limited to unauthorized file reads and writes.

CVSS severity7.1
High
EPSS probability0.21%
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 Electronics Galaxy Themes before 5.2.00.1215 allows local users to read and write private app files. The app creates an empty PendingIntent that a local attacker can hijack to perform file operations in Galaxy Themes private directories without the required permission. Exploitation requires local app-level access on a compatible Samsung Galaxy device, and the documented impact is limited to unauthorized file reads and writes.

The record

CVE
CVE-2021-25353
Published
Mar 25, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics
Product
Galaxy Themes
Classifications
CWE-285, T1533
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 25, 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=unspecified <5.2.00.1215

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Samsung Electronics · Galaxy Themesversion=unspecified <5.2.00.1215

Published CVSS scores

3.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:N
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
5.5Samsung MobileCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1533Data from Local System

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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