Privilege escalation via APUSYS confused-deputy write
Published Aug 3, 2026 · Updated Aug 3, 2026
Out-of-bounds write in MediaTek APUSYS on MT8196 and MT8366 chipsets allows local users with System privilege to elevate privileges. The APUSYS subcomponent acts as a confused deputy and performs an out-of-bounds write, but MediaTek has not disclosed the affected operation or input path. Exploitation requires existing System privilege and no user interaction; the reported consequence is further local privilege escalation.
Summary
What happened
Out-of-bounds write in MediaTek APUSYS on MT8196 and MT8366 chipsets allows local users with System privilege to elevate privileges. The APUSYS subcomponent acts as a confused deputy and performs an out-of-bounds write, but MediaTek has not disclosed the affected operation or input path. Exploitation requires existing System privilege and no user interaction; the reported consequence is further local privilege escalation.
The record
- CVE
- CVE-2026-20468
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- MediaTek
- Product
- MediaTek Chipset
- Classifications
- CWE-787, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Aug 3, 2026CVE publishedPublication date reported by the CVE source.
- Aug 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=MT8196
- Affected versionversion=MT8366
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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