Remote information disclosure via incorrect MPEG4 bounds check
Published Aug 9, 2022 · Updated Oct 20, 2025
Out-of-bounds read in Android 10, 11, 12, and 12L allows remote attackers to disclose information through MPEG-4 audio parsing. The updateAudioTrackInfoFromESDS_MPEG4Audio function in MPEG4Extractor.cpp applies an incorrect bounds check while reading MPEG-4 ESDS audio metadata, permitting a read beyond the supplied buffer. Exploitation requires user interaction but no privileges, and the resulting impact is limited to information disclosure.
Summary
What happened
Out-of-bounds read in Android 10, 11, 12, and 12L allows remote attackers to disclose information through MPEG-4 audio parsing. The updateAudioTrackInfoFromESDS_MPEG4Audio function in MPEG4Extractor.cpp applies an incorrect bounds check while reading MPEG-4 ESDS audio metadata, permitting a read beyond the supplied buffer. Exploitation requires user interaction but no privileges, and the resulting impact is limited to information disclosure.
The record
- CVE
- CVE-2022-20346
- Published
- Aug 9, 2022
- Updated
- Oct 20, 2025
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 9, 2022CVE publishedPublication date reported by the CVE source.
- Oct 20, 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?
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- Affected versionversion=Android-10 Android-11 Android-12 Android-12L
What conditions does exploitation require?
What is affected?
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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