CVE-2026-21064 Samsung Mobile CVE debrief

Who should care

Organizations using Weaver installations prior to SMR Aug-2026 Release 1 should verify their inventory and apply remediation or compensating controls to prevent local attacks. Operators, administrators, and security teams managing Weaver installations are impacted. Vulnerability management and security teams should prioritize this vulnerability due to its HIGH severity and potential impact on device inoperability. Affected operators should review and apply vendor guidance for remediation or compensating controls. Security teams should monitor for potential local attacks and verify the effectiveness of implemented controls. This vulnerability may require additional review and verification of security controls and configurations for Weaver installations. Security teams should also consider the potential impact on device inoperability and plan accordingly. Security teams should review compensating controls for exposed systems while remediation is scheduled and verified. Security teams should check relevant monitoring, detection, and logs for exposed assets that need extra review. Security teams should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Security teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Security teams should consider the potential impact on device inoperability and plan accordingly. Security teams should review compensating controls for exposed systems while remediation is scheduled and verified. Security teams should check relevant monitoring, detection, and logs for exposed assets that need extra review. Security teams should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Security teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Technical summary

CVE-2026-21064 is a HIGH severity vulnerability (CVSS score of 7) in Weaver prior to SMR Aug-2026 Release 1, allowing local attackers to cause device inoperability due to improper access control. The vulnerability affects Weaver installations prior to SMR Aug-2026 Release 1. The vulnerability has a CVSS score of 7 and is classified as HIGH severity.

Defensive priority

This HIGH severity vulnerability allows local attackers to cause device inoperability and requires immediate attention.

Recommended defensive actions

• Verify affected scope and inventory for Weaver installations prior to SMR Aug-2026 Release 1
• Apply vendor remediation or compensating controls
• Monitor for potential local attacks
• Exception tracking and retest recommended

Evidence notes

The CVE-2026-21064 record indicates Improper access control in Weaver prior to SMR Aug-2026 Release 1. Official records show HIGH severity with a CVSS score of 7. Limited source detail exists; further verification recommended. The vulnerability allows local attackers to cause device inoperability. Organizations should verify their inventory and apply remediation or compensating controls. Evidence is limited; defensive verification tasks are recommended.

Official resources