Local code execution via unchecked PTS array access
Published Apr 19, 2024 · Updated Nov 4, 2025
Buffer overflow in FFmpeg N113007-g8d24a28d06 allows local users to execute arbitrary code by processing attacker-controlled media. In areverse_request_frame, single-frame reverse filtering increments flush_idx and then reads the next s->pts element without ensuring another frame exists. Exploitation requires local processing through the audio reverse filter and can corrupt the FFmpeg process memory for code execution.
Summary
What happened
Buffer overflow in FFmpeg N113007-g8d24a28d06 allows local users to execute arbitrary code by processing attacker-controlled media. In areverse_request_frame, single-frame reverse filtering increments flush_idx and then reads the next s->pts element without ensuring another frame exists. Exploitation requires local processing through the audio reverse filter and can corrupt the FFmpeg process memory for code execution.
The record
- CVE
- CVE-2023-51796
- Published
- Apr 19, 2024
- Updated
- Nov 4, 2025
- Vendor
- FFmpeg
- Product
- FFmpeg
- Classifications
- T1203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 19, 2024CVE publishedPublication date reported by the CVE source.
- Nov 4, 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=n-113007-g8d24a28d06
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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