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CVE-2026-21050 Samsung Mobile CVE debrief

CVE-2026-21050 is a MEDIUM severity vulnerability with a CVSS score of 5.1, involving improper access control in SmartThingsKit prior to SMR Jul-2026 Release 1. This allows local attackers to access sensitive information. The vulnerability affects users of SmartThingsKit, and local attackers could exploit it to access sensitive information. The CVSS vector for this vulnerability is CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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.

Vendor
Samsung Mobile
Product
Samsung Mobile Devices
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-10
Original CVE updated
2026-07-10
Advisory published
2026-07-10
Advisory updated
2026-07-10

Who should care

This vulnerability affects users of SmartThingsKit, particularly those with local access to the system. Local attackers could exploit this vulnerability to access sensitive information. Users should verify affected systems and apply patches from Samsung as soon as possible.

Technical summary

The vulnerability is caused by improper access control in SmartThingsKit prior to SMR Jul-2026 Release 1. This allows local attackers to access sensitive information. Affected product deployments should be confirmed in managed environments, and owners assigned for follow-up. The SmartThingsKit vulnerability enables local attackers to access sensitive information due to improper access control. Users should verify affected systems and apply patches from Samsung. The CVSS vector for this vulnerability is CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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.

Defensive priority

Medium priority due to local attack vector and potential for sensitive information disclosure.

Recommended defensive actions

  • Apply the patch from Samsung as soon as possible
  • Inventory and verify affected systems
  • Monitor for potential exploitation attempts
  • Review compensating controls for exposed systems
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Evidence is limited. Official CVE and NVD records confirm the vulnerability's existence and provide basic details. The SmartThingsKit vulnerability allows local attackers to access sensitive information due to improper access control. Users should verify affected systems and apply patches from Samsung. Defensive measures include monitoring for potential exploitation attempts and reviewing compensating controls.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21050 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21050

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-21050 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21050

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.