CVE-2026-21050 Samsung Mobile CVE debrief

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.

Official resources