CVE-2019-15942 Other in n/a
FFmpeg contains an uninitialized value issue in H.264/HEVC parsing that can lead to application crashes or undefined behavior.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-15942?
CVE-2019-15942 is a high-severity vulnerability in Ffmpeg Ffmpeg, published on 5 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
FFmpeg through 4.2 has a "Conditional jump or move depends on uninitialised value" issue in h2645_parse because alloc_rbsp_buffer in libavcodec/h2645_parse.c mishandles rbsp_buffer.
Weakness: CWE-252
Which versions are affected by CVE-2019-15942?
It affects 1 product.
Products include Ffmpeg Ffmpeg.
How do I fix CVE-2019-15942?
Upgrade to a fixed version.
Is CVE-2019-15942 being exploited?
There is no known exploitation of CVE-2019-15942 in the wild and no public exploit code.
Other vulnerabilities in Ffmpeg Ffmpeg
Sources
Also known as CLEANSTART-2024-JC88637, GHSA-8pcj-qprc-8gf2, JLSEC-2025-105.