NULL pointer dereference in FFmpeg - CVE-2023-6603
Published: October 27, 2025
Vulnerability identifier: #VU117662
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-6603
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ffmpeg.sourceforge.net
Affected software:
FFmpeg
FFmpeg
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when parsing HLS playlists. A remote attacker can pass specially crafted HLS playlist to the application and crash the application.
How to mitigate CVE-2023-6603
Install update from vendor's website.