Medium 4.4Known exploited (CISA KEV)Published Mar 4, 2021

CVE-2021-25337Improper 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.

Updated under an hour ago (Oct 26, 2026, 11:20 PM ET)

Does this affect you?

It affects Samsung Mobile Devices and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 8, 2022; federal agencies had to remediate by Nov 29, 2022. Treat that date as your deadline.

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Exploited in the last 30 days

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.

CVSS: 4.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-269
Known exploited: Added to CISA KEV Nov 8, 2022; federal remediation due Nov 29, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 2.81% (percentile 86)
Assigned by: Samsung Mobile
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Samsung Mobile Samsung Mobile Devices samsung_mobile:devices (from the name)	from Selected P(9.0), Q(10.0), R(11.0) before SMR Mar-2021 Release 1	CNA record
samsung android samsung:android	9.0; 9.0; 9.0; 9.0; 9.0; 9.0; 9.0; 9.0; and 40 more ranges	NVD

References

References

https://security.samsungmobile.com/securityUpdate.smsb	x-refsource-confirm, vendor-advisory
https://security.samsungmobile.com	x-refsource-misc, vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25337	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.