CVE-2026-21030: Improper access control in MediaTek Audio HAL prior to SMR Jun-2026 Release 1 allows local attackers to trigge

Routine

HIGH 7.8MITIGATE

CVE-2026-21030 is a high-severity flaw (CVSS 7.8) affecting android. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper access control in MediaTek Audio HAL prior to SMR Jun-2026 Release 1 allows local attackers to trigger privileged functions.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Published	2026-06-05
Last modified	2026-10-26

Publisher (CNA): Samsung Mobile · Vendor: samsung

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-05 11:16 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

samsung android MITIGATE

Affected: 14.0 · 14.0 smr-apr-2022-r1 · 14.0 smr-apr-2023-r1 · 14.0 smr-apr-2024-r1 · 14.0 smr-apr-2025-r1 · 14.0 smr-apr-2026-r1 · 14.0 smr-aug-2022-r1 · 14.0 smr-aug-2023-r1

Fixed in: no fixed release known

Safe to downgrade to: a release before 14.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-21030?

android: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-21030 being exploited?

CVE-2026-21030 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-21030 affect?

CVE-2026-21030 affects android. Severity is high (CVSS 7.8). Improper access control in MediaTek Audio HAL prior to SMR Jun-2026 Release 1 allows local attackers to trigger privileged functions.

How urgent is CVE-2026-21030?

Priority 27/100. High severity

Software pages

Android vulnerabilities · Samsung vulnerabilities

Related CVEs

CVE-2026-21020 HIGH 7.8 MITIGATE Improper export of android application components in OmaCP prior to SMR May-2026 Release 1 allows local attack
CVE-2026-21021 MEDIUM 6.8 MITIGATE Improper input validation in Routines prior to SMR May-2026 Release 1 allows physical attackers to launch priv
CVE-2026-21018 MEDIUM 6.7 MITIGATE Out-of-bounds write in SveService prior to SMR May-2026 Release 1 allows local privileged attackers to execute
CVE-2026-21022 MEDIUM 5.5 MITIGATE Improper handling of insufficient permissions in Routines prior to SMR May-2026 Release 1 allows local attacke
CVE-2026-0092 CRITICAL 10.0 MITIGATE In Package Manager, there is a possible device lock controller bypass due to a missing permission check

References

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