Description
In Audio HAL, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11191981; Issue ID: MSV-9125.
Published: 2026-09-07
Score: 6.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Local Privilege Escalation
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a use‑after‑free in the Audio HAL of MediaTek chipsets, allowing an attacker who already has local System privileges to manipulate internal data after a memory block has been freed. This misuse can lead to local privilege escalation without any user interaction, giving the attacker full control over the device.

Affected Systems

MediaTek chipsets, identified by MediaTek, Inc. The specific Audio HAL component is affected. No explicit version information was provided, so all revisions that include the vulnerable Audio HAL code are potentially impacted.

Risk and Exploitability

The EPSS score is unavailable, and the vulnerability is not listed in CISA’s KEV catalog, indicating it has not been observed in the wild. The CVSS score is 6.7, which reflects a medium severity for a use‑after‑free that permits local privilege escalation. Attackers would need to compromise the device first to obtain System privileges or exploit another vector to gain them. Once those conditions are met, exploitation of this flaw is straightforward.

Generated by OpenCVE AI on September 7, 2026 at 14:03 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the ALPS11191981 patch to the MediaTek chipset firmware to fix the use‑after‑free vulnerability in the Audio HAL.
  • Upgrade the device to the latest MediaTek firmware that incorporates the patch.
  • Restrict or disable access to the audio subsystem or downgrade permissions for services that load the vulnerable Audio HAL until the system is patched.

Generated by OpenCVE AI on September 7, 2026 at 14:03 UTC.

Tracking

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Advisories

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History

Mon, 07 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in MediaTek Audio HAL Allows Local Privilege Escalation

Mon, 07 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 07 Sep 2026 04:15:00 +0000

Type Values Removed Values Added
Title Use‑After‑Free in MediaTek Audio HAL Allows Local Privilege Escalation

Mon, 07 Sep 2026 04:00:00 +0000

Type Values Removed Values Added
First Time appeared Mediatek
Mediatek mediatek Chipset
Vendors & Products Mediatek
Mediatek mediatek Chipset

Mon, 07 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
Description In Audio HAL, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11191981; Issue ID: MSV-9125.
Weaknesses CWE-416
References

Subscriptions

Mediatek Mediatek Chipset
cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-09-08T03:55:31.064Z

Reserved: 2025-11-03T01:30:59.029Z

Link: CVE-2026-20507

cve-icon Vulnrichment

Updated: 2026-09-07T10:48:09.979Z

cve-icon NVD

Status : Deferred

Published: 2026-09-07T02:17:19.360

Modified: 2026-09-08T18:37:41.047

Link: CVE-2026-20507

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T14:15:16Z

Weaknesses