CVE-2026-21021

Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged activity.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=05	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	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::::::

History

26 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Validación de entrada incorrecta en Rutinas anterior a SMR May-2026 Release 1 permite a atacantes físicos lanzar actividad privilegiada.

Information

Published : 2026-05-13 06:16

Updated : 2026-10-26 17:10

NVD link : CVE-2026-21021

Mitre link : CVE-2026-21021

CVE.ORG link : CVE-2026-21021

JSON object : View

Products Affected

samsung

android

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-21021", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21021", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-13T10:46:08.173976Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}], "cvssMetricV40": [{"type": "Secondary", "source": "mobile.security@samsung.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "mobile.security@samsung.com", "affectedData": [{"vendor": "Samsung Mobile", "product": "Samsung Mobile Devices", "versions": [{"status": "unaffected", "version": "SMR May-2026 Release in Android 16", "lessThan": "*", "versionType": "semver"}], "defaultStatus": "affected"}]}], "published": "2026-05-13T06:16:13.670", "references": [{"url": "https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=05", "tags": ["Vendor Advisory"], "source": "mobile.security@samsung.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged activity."}, {"lang": "es", "value": "Validaci\u00f3n de entrada incorrecta en Rutinas anterior a SMR May-2026 Release 1 permite a atacantes f\u00edsicos lanzar actividad privilegiada."}], "lastModified": "2026-10-26T17:10:03.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:samsung:android:16.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3FD6766A-EC2B-4CA2-9A8E-2BA5C9E9ECF9"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-apr-2026-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8F2CAFE7-A314-4984-A4D0-A7FE3BEDAE91"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-aug-2025-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C86A3033-9DD1-47F9-B95D-10F82A31D335"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-dec-2025-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "98C26CF8-228F-4791-B5A3-B65DF709F402"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-feb-2026-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2BB01FDF-5022-4EAE-9779-F09771BEC443"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-jan-2026-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2CCDCC2-A128-4BB4-91CD-E534E06BB24C"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-mar-2026-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C1BA43B7-5D88-4F5E-B90C-5AE8AC422214"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-nov-2025-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C527C12-5480-4604-A480-1E540095EB5D"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-oct-2025-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B3C64BA1-AF0F-4E65-97BE-3FD1958FFC79"}, {"criteria": "cpe:2.3:o:samsung:android:16.0:smr-sep-2025-r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79C71CA6-508E-4A19-9014-47FA1BD5A83C"}], "operator": "OR"}]}], "sourceIdentifier": "mobile.security@samsung.com"}