CVE-2021-25337

Samsung Mobile Devices Improper Access Control Vulnerability

Medium 4.4
Exploited: added to CISA KEV 8 Nov 2022

Description

Improper access control in clipboard service in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows untrusted applications to read or write certain local files.

Key facts

Published: 4 Mar 2021
Last changed: 21 Oct 2025
Assigned by: Samsung Mobile
KEV added: 8 Nov 2022
KEV fix due: 29 Nov 2022
EPSS: 2.807% likely to be exploited in the next 30 days, higher than 86.729% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: no; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

4.4CVSS 3.1, Mediumfrom the CNA (Samsung Mobile)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

What to do

Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
Samsung Mobile	Samsung Mobile Devices	Selected P(9.0), Q(10.0), R(11.0) up to but excluding SMR Mar-2021 Release 1 (affected)

Timeline

4 Mar 2021 Published
8 Nov 2022 CVE-2021-25337 added to CISA KEV
8 Nov 2022 Added to the CISA KEV catalogue

Weakness

CWE-269

References

security.samsungmobile.comx_refsource_CONFIRM
security.samsungmobile.comx_refsource_MISC