CVE-2026-21003

CVE-2026-21003 is a medium-severity vulnerability in Samsung Android with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 3.x base score 6.8)
• CVSS v4: 5.2
• EPSS exploit prediction: 0% (6th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2026-21816
• Affected product: Samsung Android
• Published: 2026-04-13
• Last modified: 2026-06-17

Description

Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.

Frequently asked questions

What is CVE-2026-21003?

Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.

How severe is CVE-2026-21003?

CVE-2026-21003 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21003 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21003?

CVE-2026-21003 primarily affects Samsung Android. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-21003?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21003 have an EU (EUVD) identifier?

Yes. CVE-2026-21003 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21816.

When was CVE-2026-21003 published?

CVE-2026-21003 was published on 2026-04-13 and last updated on 2026-06-17.

References

• https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=04

Affected products (79)

• cpe:2.3:o:samsung:android:14.0:-:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-apr-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-apr-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-apr-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-apr-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-aug-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-aug-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-aug-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-aug-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-dec-2021-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-dec-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-dec-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-dec-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-dec-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-feb-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-feb-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-feb-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-feb-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-feb-2026-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jan-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jan-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jan-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jan-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jan-2026-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jul-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jul-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jul-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jul-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jun-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jun-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jun-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-jun-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-mar-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-mar-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-mar-2024-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-mar-2025-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-mar-2026-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-may-2022-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-may-2023-r1:*:*:*:*:*:*
• cpe:2.3:o:samsung:android:14.0:smr-may-2024-r1:*:*:*:*:*:*

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