CVE-2021-25337Known exploitationPublic exploit

Arbitrary file access via unprotected clipboard provider

Published Mar 4, 2021 · Updated Oct 21, 2025

Improper access control in Samsung Mobile Devices allows attackers to read or write arbitrary files through untrusted apps. The exported SemClipboardProvider accepts an app-supplied _data path and returns a file descriptor without checking the caller UID or requiring a provider permission. Exploitation requires execution of an untrusted application on an affected device and bypasses Linux permissions or SELinux for the chosen file.

CVSS severity4.4
Medium
EPSS probability2.81%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Samsung Mobile Devices allows attackers to read or write arbitrary files through untrusted apps. The exported SemClipboardProvider accepts an app-supplied _data path and returns a file descriptor without checking the caller UID or requiring a provider permission. Exploitation requires execution of an untrusted application on an affected device and bypasses Linux permissions or SELinux for the chosen file.

The record

CVE
CVE-2021-25337
Published
Mar 4, 2021
Updated
Oct 21, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-269, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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=Selected P(9.0), Q(10.0), R(11.0) <SMR Mar-2021 Release 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Selected P(9.0), Q(10.0), R(11.0) <SMR Mar-2021 Release 1

Published CVSS scores

4.4Samsung MobileCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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