CVE-2023-46407 Memory corruption in n/a
An out-of-bounds read in FFmpeg's VLC prefix reading allows attackers to cause denial of service or disclose sensitive memory contents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-46407?
CVE-2023-46407 is a medium-severity memory corruption vulnerability in Ffmpeg Ffmpeg, published on 27 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-125
Which versions are affected by CVE-2023-46407?
It affects 1 product.
Products include Ffmpeg Ffmpeg.
How do I fix CVE-2023-46407?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-46407 being exploited?
There is no known exploitation of CVE-2023-46407 in the wild and no public exploit code.
Other vulnerabilities in Ffmpeg Ffmpeg
Sources
Also known as CLEANSTART-2025-PZ70162, GHSA-9j42-4j78-g4mh.