How severe is CVE-2021-25370?

CVE-2021-25370 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-25370 being actively exploited?

Yes. CVE-2021-25370 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-2021-25370?

CVE-2021-25370 primarily affects Samsung Android. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-25370?

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-2021-25370 have an EU (EUVD) identifier?

Yes. CVE-2021-25370 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12266. It is also flagged as exploited in the EUVD (since 2022-11-08).

When was CVE-2021-25370 published?

CVE-2021-25370 was published on 2021-03-26 and last updated on 2026-06-17.

CVE-2021-25370

CVE-2021-25370 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 6.1. 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-416.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.9
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-11-08)
EU (EUVD) id: EUVD-2021-12266
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-11-08)
Weakness: CWE-416
Affected product: Samsung Android
Published: 2021-03-26
Last modified: 2026-06-17

Description

An incorrect implementation handling file descriptor in dpu driver prior to SMR Mar-2021 Release 1 results in memory corruption leading to kernel panic.

Frequently asked questions

What is CVE-2021-25370?: An incorrect implementation handling file descriptor in dpu driver prior to SMR Mar-2021 Release 1 results in memory corruption leading to kernel panic.
How severe is CVE-2021-25370?: CVE-2021-25370 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-25370 being actively exploited?: Yes. CVE-2021-25370 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-2021-25370?: CVE-2021-25370 primarily affects Samsung Android. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-25370?: 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-2021-25370 have an EU (EUVD) identifier?: Yes. CVE-2021-25370 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12266. It is also flagged as exploited in the EUVD (since 2022-11-08).
When was CVE-2021-25370 published?: CVE-2021-25370 was published on 2021-03-26 and last updated on 2026-06-17.

References

Affected products (50)

cpe:2.3:o:samsung:android:8.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:8.1:-:*:*:*:*:*:*
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:*:*:*:*:*:*

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