CVE-2026-90783
Gravedad CVSS v4.0:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
13/09/2026
Última modificación:
30/09/2026
Descripción
*** Pendiente de traducción *** MKVToolNix through 101.0 contains a heap buffer overflow in the bundled avilib library's ODML superindex parser due to integer wraparound in 32-bit arithmetic. Attackers can craft a malicious AVI file with oversized entry counts that cause an undersized heap allocation, allowing a heap buffer overflow when the file is parsed with mkvmerge.
Impacto
Puntuación base 4.0
8.50
Gravedad 4.0
ALTA
Puntuación base 3.x
7.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://codeberg.org/mbunkus/mkvtoolnix
- https://codeberg.org/mbunkus/mkvtoolnix/commit/1495126138e086080f0163bee27fafbdf956a1d0
- https://codeberg.org/mbunkus/mkvtoolnix/src/tag/release-101.0/lib/avilib-0.6.10/avilib.c#L2552-L2570
- https://www.vulncheck.com/advisories/mkvtoolnix-through-101.0-heap-buffer-overflow-via-avilib-odml-superindex-integer-wraparound
- https://lists.debian.org/debian-lts-announce/2026/09/msg00040.html


