CVE-2026-21021
Summary
| CVE | CVE-2026-21021 |
|---|---|
| State | PUBLISHED |
| Assigner | SamsungMobile |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-13 06:16:13 UTC |
| Updated | 2026-05-13 17:29:00 UTC |
| Description | Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged activity. |
Risk And Classification
Primary CVSS: v4.0 5.1 MEDIUM from [email protected]
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
EPSS: 0.000460000 probability, percentile 0.142590000 (date 2026-05-21)
Problem Types: NVD-CWE-noinfo | CWE-20: Improper Input Validation
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.1 | MEDIUM | 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/C... |
| 4.0 | CNA | CVSS | 5.1 | MEDIUM | 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 |
| 3.1 | [email protected] | Primary | 6.8 | MEDIUM | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v4.0 Breakdown
Attack Vector
PhysicalAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS: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
CVSS v3.1 Breakdown
Attack Vector
PhysicalAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Samsung | Android | 16.0 | - | All | All |
| Operating System | Samsung | Android | 16.0 | smr-apr-2026-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-aug-2025-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-dec-2025-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-feb-2026-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-jan-2026-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-mar-2026-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-nov-2025-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-oct-2025-r1 | All | All |
| Operating System | Samsung | Android | 16.0 | smr-sep-2025-r1 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Samsung Mobile | Samsung Mobile Devices | unaffected SMR May-2026 Release in Android 16 * semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| security.samsungmobile.com/securityUpdate.smsb | [email protected] | security.samsungmobile.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.