libaribb24 (aribb24) through 1.0.3 contains a heap-based buffer overflow vulnerability in src/parser.c that allows attackers to corrupt heap memory via an oversized caption data unit. Attackers can supply a crafted caption PES packet in a media file or broadcast stream, processed through arib_parse_pes(), to crash FFmpeg or VLC and possibly corrupt further memory.
https://hackmd.io/@haindpwn/aribb24-caption-data-unit-and-csi-oob-write
https://github.com/nkoriyama/aribb24/blob/v1.0.3/src/parser.c
Published: 2026-10-19
Updated: 2026-10-19
Base Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:C
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Severity: Medium
Base Score: 6.9
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00132