Local privilege escalation via unchecked HEVC decoding
Published Jan 3, 2023 · Updated Apr 10, 2025
Out-of-bounds write in the MediaTek HEVC decoder on Android 10.0 and 11.0 allows local users with System privileges to elevate access. The decoder writes past a buffer because a required bounds check is missing; MediaTek has not disclosed the affected function, input field, or buffer. Exploitation requires local System execution privileges and no user interaction, while the resulting privilege level remains unspecified.
Summary
What happened
Out-of-bounds write in the MediaTek HEVC decoder on Android 10.0 and 11.0 allows local users with System privileges to elevate access. The decoder writes past a buffer because a required bounds check is missing; MediaTek has not disclosed the affected function, input field, or buffer. Exploitation requires local System execution privileges and no user interaction, while the resulting privilege level remains unspecified.
The record
- CVE
- CVE-2022-32637
- Published
- Jan 3, 2023
- Updated
- Apr 10, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, CWE-20, T1404
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jan 3, 2023CVE publishedPublication date reported by the CVE source.
- Apr 10, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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