CVE-2026-90783 — MKVToolNix through 101.0 Heap Buffer Overflow via avilib ODML Superindex Integer Wraparound
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 cra…
Published: 2026-09-13 · CVSS: 8.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7