CVE-2026-90783 - MKVToolNix through 101.0 Heap Buffer Overflow via avilib ODML Superindex Integer Wraparound

CVE-2026-90783 - MKVToolNix through 101.0 Heap Buffer Overflow via avilib ODML Superindex Integer Wraparound

https://cvefeed.io/rssfeed/latest.atom / Sun, 09/13/2026 - 19:31
CVE ID :CVE-2026-90783
Published : Sept. 13, 2026, 1:16 p.m. | 3 hours, 50 minutes ago
Description :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.
Severity: 8.5 | HIGH
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