How severe is CVE-2021-25337?

CVE-2021-25337 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-25337 being actively exploited?

Yes. CVE-2021-25337 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-11-08, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-25337?

CVE-2021-25337 primarily affects Samsung Android. In total, 48 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-25337?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-25337 have an EU (EUVD) identifier?

Yes. CVE-2021-25337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12233. It is also flagged as exploited in the EUVD (since 2022-11-08).

When was CVE-2021-25337 published?

CVE-2021-25337 was published on 2021-03-04 and last updated on 2026-06-17.

CVE-2021-25337

CVE-2021-25337 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 4.4. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-11-08). The underlying weakness is classified as CWE-269.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 5.8
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-11-08)
EU (EUVD) id: EUVD-2021-12233
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-11-08)
Weakness: CWE-269
Affected product: Samsung Android
Published: 2021-03-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-25337?: 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.
How severe is CVE-2021-25337?: CVE-2021-25337 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-25337 being actively exploited?: Yes. CVE-2021-25337 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-11-08, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-25337?: CVE-2021-25337 primarily affects Samsung Android. In total, 48 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-25337?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-25337 have an EU (EUVD) identifier?: Yes. CVE-2021-25337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12233. It is also flagged as exploited in the EUVD (since 2022-11-08).
When was CVE-2021-25337 published?: CVE-2021-25337 was published on 2021-03-04 and last updated on 2026-06-17.

References

Affected products (48)

cpe:2.3:o:samsung:android:9.0:smr-apr-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-apr-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-aug-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-aug-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-dec-2018-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-dec-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-dec-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-feb-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-feb-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jan-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jan-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jul-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jul-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jun-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jun-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-mar-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-mar-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-may-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-may-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-nov-2018-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-nov-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-nov-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-oct-2018-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-oct-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-oct-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-sep-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-sep-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-aug-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2019-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-dec-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jul-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jun-2020-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-mar-2020-r1:*:*:*:*:*:*

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