PatchSiren cyber security CVE debrief

CVE-2026-21044 Samsung Mobile CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-10T05:16:35.063Z and has not been modified since then. This Improper authorization vulnerability in KnoxGuardManager prior to SMR Jul-2026 Release 1 allows local attackers to bypass the persistence configuration of the application. Security teams should assess the impact and apply necessary updates.

Vendor: Samsung Mobile
Product: Samsung Mobile Devices
CVSS: MEDIUM 5.8
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

Security teams responsible for Samsung devices should assess and apply the July 2026 SMR update to prevent local attackers from bypassing the persistence configuration of the KnoxGuardManager application. Teams should also verify and enforce the latest persistence configuration.

Technical summary

CVE-2026-21044 is an Improper authorization vulnerability in KnoxGuardManager prior to SMR Jul-2026 Release 1. This vulnerability allows local attackers to bypass the persistence configuration of the application. The CVSS score is 5.8, indicating a medium severity level. Affected systems require updates to prevent potential local attacks.

Defensive priority

Apply the July 2026 SMR update to KnoxGuardManager. Verify and enforce the latest persistence configuration. Monitor for suspicious local activity and review compensating controls for high-risk devices.

Recommended defensive actions

Apply the July 2026 SMR update to KnoxGuardManager
Verify and enforce the latest persistence configuration
Monitor for suspicious local activity
Inventory and track Samsung devices for compliance
Enforce compensating controls for high-risk devices

Evidence notes

The CVE record and NVD entry provide limited detail. Verification of the vulnerability and affected scope is needed. Samsung's security update page may offer additional information. The debrief and technical summary provide further context for defenders. However, additional verification tasks are required to ensure accurate understanding of the vulnerability.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-10T05:16:35.063Z and has not been modified since then.