How severe is CVE-2021-25394?

CVE-2021-25394 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-25394 being actively exploited?

Yes. CVE-2021-25394 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-06-29, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-25394?

CVE-2021-25394 primarily affects Samsung Android. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-25394?

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-2021-25394 have an EU (EUVD) identifier?

Yes. CVE-2021-25394 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12290. It is also flagged as exploited in the EUVD (since 2023-06-29).

When was CVE-2021-25394 published?

CVE-2021-25394 was published on 2021-06-11 and last updated on 2026-06-17.

CVE-2021-25394

CVE-2021-25394 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 6.4. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-06-29). The underlying weakness is classified as CWE-362.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 4.4
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2023-06-29)
EU (EUVD) id: EUVD-2021-12290
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2023-06-29)
Weakness: CWE-362
Affected product: Samsung Android
Published: 2021-06-11
Last modified: 2026-06-17

Description

A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.

Frequently asked questions

What is CVE-2021-25394?: A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.
How severe is CVE-2021-25394?: CVE-2021-25394 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-25394 being actively exploited?: Yes. CVE-2021-25394 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-06-29, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-25394?: CVE-2021-25394 primarily affects Samsung Android. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-25394?: 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-2021-25394 have an EU (EUVD) identifier?: Yes. CVE-2021-25394 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-12290. It is also flagged as exploited in the EUVD (since 2023-06-29).
When was CVE-2021-25394 published?: CVE-2021-25394 was published on 2021-06-11 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:o:samsung:android:8.1:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-apr-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:9.0:smr-mar-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-apr-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:10.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:11.0:smr-apr-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:11.0:smr-feb-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:11.0:smr-jan-2021-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:11.0:smr-jul-2021-r1:*:*:*:*:*:*

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