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CVE-2026-21030 Samsung Mobile CVE debrief

CVE-2026-21030 is a MEDIUM-severity vulnerability in MediaTek Audio HAL, which is part of Samsung's Android operating system. The vulnerability, published on 2026-06-05T11:16:35.553Z and modified on 2026-06-06T02:00:05.443Z, allows local attackers to trigger privileged functions due to improper access control. The CVSS score for this vulnerability is 6.4.

Vendor
Samsung Mobile
Product
Samsung Mobile Devices
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-06
Advisory published
2026-06-05
Advisory updated
2026-06-06

Who should care

Users of Samsung Android devices, particularly those with versions prior to SMR Jun-2026 Release 1, should be aware of this vulnerability. The vulnerability affects multiple versions of Samsung Android, including Android 14.0 and 15.0.

Technical summary

The vulnerability is caused by improper access control in MediaTek Audio HAL. This allows local attackers to trigger privileged functions, potentially leading to escalation of privileges.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply the security patch released by Samsung for SMR Jun-2026 Release 1 or later.
  • Ensure that your Samsung Android device is updated to the latest security patch level.
  • Use secure practices when handling sensitive data and avoid granting unnecessary privileges to applications.

Evidence notes

The CVE-2026-21030 record and details are sourced from official databases and vendor advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-21030 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-21030

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

  • CVE-2026-21030 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-21030

    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.