Local memory disclosure via missing bounds check
Published Aug 3, 2026 · Updated Aug 3, 2026
Out-of-bounds read in MediaTek Chipset geniezone allows local users with System privilege to read beyond a valid buffer. The component reads past a buffer because it fails to validate an unspecified boundary before access; MediaTek has not disclosed the affected function or input path. Exploitation requires existing System privilege and no user interaction; MediaTek describes local information disclosure, while CISA records availability impact only.
Summary
What happened
Out-of-bounds read in MediaTek Chipset geniezone allows local users with System privilege to read beyond a valid buffer. The component reads past a buffer because it fails to validate an unspecified boundary before access; MediaTek has not disclosed the affected function or input path. Exploitation requires existing System privilege and no user interaction; MediaTek describes local information disclosure, while CISA records availability impact only.
The record
- CVE
- CVE-2026-20496
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- MediaTek
- Product
- MediaTek Chipset
- Classifications
- CWE-125, T1005
- 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=MT6983
- Affected versionversion=MT8676
- Affected versionversion=MT8678
- Affected versionversion=MT8755
- Affected versionversion=MT8768
- Affected versionversion=MT8771
- Affected versionversion=MT8775
- Affected versionversion=MT8781
- Affected versionversion=MT8786
- Affected versionversion=MT8791T
- Affected versionversion=MT8792
- Affected versionversion=MT8793
- Affected versionversion=MT8796
- Affected versionversion=MT8797
- Affected versionversion=MT8798
- Affected versionversion=MT8799
- Affected versionversion=MT8910
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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