CVE-2026-88376
High
Description
Bento4 1.6.0.0 contains an integer underflow vulnerability in AP4_AvccAtom::Create() and AP4_HvccAtom::Create(). A specially crafted MP4 file containing an avcC or hvcC atom with a declared size smaller than the atom header size can cause the payload-size calculation to wrap to a large unsigned value. The resulting invalid buffer allocation and copy operations can cause application termination, leading to denial of service.
SeverityHigh
CVSS7.5
Exploit probability33. percentile0.4%
ProductBento4
PublishedSep 24, 2026
First seenSep 24, 2026
Weakness typeCWE-191CWE-191
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Bento4 | 1.6.0.0 | — |
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