Cyber Resilience

CVE-2023-46407

Memory Safety in Ffmpeg 6.1

Published
27 October 2023
Modified
11 August 2025
Patch / advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS Score 0.0030 22th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2023-46407 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Ffmpeg Ffmpeg. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 22th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

FFmpeg prior to commit bf814 was discovered to contain an out of bounds read via the dist->alphabet_size variable in the read_vlc_prefix() function.

CWE(s)

Related Threats

CVEs Like This One

CVE-2024-35367Same product: Ffmpeg Ffmpeg
CVE-2025-69693Same product: Ffmpeg Ffmpeg
CVE-2026-30997Same product: Ffmpeg Ffmpeg
CVE-2026-64833Same product: Ffmpeg Ffmpeg
CVE-2025-0518Same product: Ffmpeg Ffmpeg
CVE-2024-32230Same product: Ffmpeg Ffmpeg
CVE-2026-30998Same product: Ffmpeg Ffmpeg
CVE-2024-32228Same product: Ffmpeg Ffmpeg
CVE-2024-36616Same product: Ffmpeg Ffmpeg
CVE-2024-36618Same product: Ffmpeg Ffmpeg

Affected Assets

ffmpeg
ffmpeg
6.1

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure-development practices such as bounds checking and memory-safe languages directly prevent out-of-bounds reads.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover instances of out-of-bounds reads after code is deployed.

PR.PS-02 partial match
prevents

Routine patching replaces vulnerable code containing out-of-bounds read flaws.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

detects

Security testing in development and acceptance includes fuzzing and static analysis that detect out-of-bounds read defects before release.

A.8.15 Logging partial match
detects

Logging can record evidence of an out-of-bounds read but does not prevent the weakness itself.

prevents

Secure development life cycle mandates input validation and bounds checking that directly prevent out-of-bounds reads.

prevents

Application security requirements include explicit bounds and memory-safety specifications that mitigate buffer over-reads.

prevents

Secure system architecture and engineering principles require memory-safe design patterns and runtime protections against out-of-bounds access.

prevents

Secure coding standards explicitly forbid unsafe pointer arithmetic and mandate bounds-checked reads, eliminating CWE-125.

References