CVE-2026-125244
Published:November 09, 2026
Updated:November 10, 2026
FFmpeg before 8.1.3 and 9.x before 9.0.2 contains an out-of-bounds write vulnerability in the VVC decoder's sh_entry_points() function in libavcodec/vvc/ps.c. Attackers can supply a crafted VVC (H.266) bitstream whose SPS/PPS tile and WPP layout produces excess entry points, overflowing entry_point_start_ctu and corrupting decoder memory.
Affected Packages
ffmpeg (CONAN):
Affected version(s) >=8.0 <9.0.2 || >=7.0.1 <9.0.2 || =9.0.1 <9.0.2Fix Suggestion:
Update to version 9.0.2https://github.com/FFmpeg/FFmpeg.git (GITHUB):
Affected version(s) =n8.2-dev <n9.0.2 || >=n9.0 <n9.0.2Fix Suggestion:
Update to version n9.0.2https://github.com/FFmpeg/FFmpeg.git (GITHUB):
Affected version(s) >=n7.0 <n8.1.3 || >=n8.0 <n8.1.3Fix Suggestion:
Update to version n8.1.3Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Write