CVE-2026-21021

Improper Input Validation Allows Physical Privilege Escalation on Samsung Devices

Published May 13, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged activity.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Improper Input Validation Allows Physical Privilege Escalation on Samsung Devices
Type Values Removed Values Added
Title Physical Attack Privilege Escalation via Improper Input Validation in Samsung Mobile Firmware
Weaknesses CWE-20
Type Values Removed Values Added
First Time appeared Samsung
Samsung android
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:samsung:android:16.0:-:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-apr-2026-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-aug-2025-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-dec-2025-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-feb-2026-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-jan-2026-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-mar-2026-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-nov-2025-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-oct-2025-r1:*:*:*:*:*:*
cpe:2.3:o:samsung:android:16.0:smr-sep-2025-r1:*:*:*:*:*:*
Vendors & Products Samsung
Samsung android
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Physical Attack Privilege Escalation via Improper Input Validation in Samsung Mobile Firmware
Weaknesses CWE-20
Type Values Removed Values Added
First Time appeared Samsung Mobile
Samsung Mobile samsung Mobile Devices
Vendors & Products Samsung Mobile
Samsung Mobile samsung Mobile Devices
Type Values Removed Values Added
Description Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged activity.
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SamsungMobile
Published
Updated
May 13, 2026, 10:50 AM
Reserved
Dec 11, 2025, 1:33 AM
Status
Analyzed
Published
May 13, 2026, 6:16 AM
Modified
Oct 26, 2026, 5:10 PM