Code execution via unchecked MP4 copy length
Published Nov 16, 2023 · Updated Feb 25, 2026
Heap buffer overflow in Adobe Media Encoder 23.6 and earlier and 24.0 through 24.0.2 allows remote attackers to execute code via a malicious MP4 file. The MP4 parser copies user-supplied data into a fixed-length heap buffer without first validating the supplied length. A victim must open the crafted file or visit a malicious page, and successful exploitation runs code in the current process context.
Summary
What happened
Heap buffer overflow in Adobe Media Encoder 23.6 and earlier and 24.0 through 24.0.2 allows remote attackers to execute code via a malicious MP4 file. The MP4 parser copies user-supplied data into a fixed-length heap buffer without first validating the supplied length. A victim must open the crafted file or visit a malicious page, and successful exploitation runs code in the current process context.
The record
- CVE
- CVE-2023-47042
- Published
- Nov 16, 2023
- Updated
- Feb 25, 2026
- Vendor
- Adobe
- Product
- Adobe Media Encoder
- Classifications
- CWE-122, T1203, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 16, 2023CVE publishedPublication date reported by the CVE source.
- Feb 25, 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=0 <=23.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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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