Integer Underflow in Bento4 Affects Video Processing Applications
CVE-2026-88377

6.2MEDIUM

Key Information:

Vendor

Axiomatic Systems

Status
Bento4
Vendor
CVE Published:
24 September 2026

What is CVE-2026-88377?

Bento4 1.6.0.0 is vulnerable to an integer underflow in its avcC and hvcC configuration atom parsers. When processing a specially crafted MP4 file that contains an atom with a declared size smaller than the expected header size, the vulnerability enables an invalid payload-size calculation, potentially leading to oversized buffer operations. This can result in passing invalid or NULL pointers within the AP4_DataBuffer handling process, ultimately causing application crashes and creating a denial of service scenario.

References

https://github.com/axiomatic-systems/Bento4/issues/1092

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.