Sensitive-memory disclosure via MP4 parser over-read
Published Jul 12, 2023 · Updated Mar 5, 2025
Out-of-bounds read in Adobe Media Encoder 22.0 and earlier or 15.4.2 and earlier allows remote attackers to disclose memory via a malicious MP4 file. The MP4 parser fails to validate user-supplied data before reading it, so parsing can continue past the end of an allocated buffer. Exploitation requires a victim to open the file or visit a malicious page; the leaked memory can expose sensitive data and help bypass ASLR for a chained attack.
Summary
What happened
Out-of-bounds read in Adobe Media Encoder 22.0 and earlier or 15.4.2 and earlier allows remote attackers to disclose memory via a malicious MP4 file. The MP4 parser fails to validate user-supplied data before reading it, so parsing can continue past the end of an allocated buffer. Exploitation requires a victim to open the file or visit a malicious page; the leaked memory can expose sensitive data and help bypass ASLR for a chained attack.
The record
- CVE
- CVE-2021-43758
- Published
- Jul 12, 2023
- Updated
- Mar 5, 2025
- Vendor
- Adobe
- Product
- Adobe Media Encoder
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 12, 2023CVE publishedPublication date reported by the CVE source.
- Mar 5, 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=0 <=15.4.2
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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