Home/CVE/Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch privileged act
CVE

CVE-2026-21021

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

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

MEDIUM · CVSS 6.8 EPSS 0.00046
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
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Affected Products & Versions

1
samsung androidall versions
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Scoring & Timeline

6.8
MEDIUM · CVSS v3.1 · mobile.security@samsung.com
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Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 May 2026 · 06:16 AM
CVSS VectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=05Vendor Advisory
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