libdvdnav before 7.0.0 contains a heap out-of-bounds read vulnerability in dvdnav_describe_title_chapters that allows attackers to read beyond the part-of-title array by supplying an oversized vts_ttn value. Attackers can provide a crafted DVD or disc image declaring a larger VMGI title vts_ttn than the title set's entries to crash applications enumerating chapters.
https://hackmd.io/@haindpwn/libdvdnav-navigation-index-oob-read
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103519
https://code.videolan.org/videolan/libdvdnav/-/commit/1d2af48d685911a169fe77d500b1d426910c6f77
https://code.videolan.org/videolan/libdvdnav/-/blob/6.1.1/src/searching.c#L670
Published: 2026-10-18
Updated: 2026-10-18
Base Score: 4.9
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Severity: Medium
Base Score: 6.8
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: Medium