Moritz Bunkus MKVToolNix vulnerabilities

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Published CVEs affecting Moritz Bunkus MKVToolNix: 1 record(s), with affected versions and fixes.

CVE-2026-90783 High · 7.8 CWE-680 Sep 13, 2026

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 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.