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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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21044 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21044

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

  • CVE-2026-21044 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21044

    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.