CVE-2026-88376CWE-191

CVE-2026-88376

High · published September 24, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
31.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00390 · 31.9th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-09-24T21:17Z
References (2)
https://github.com/axiomatic-systems/Bento4/issues/1091 · [email protected]https://github.com/axiomatic-systems/Bento4/issues/1091 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 26 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 24 SEP 00:00Z
    Bento4 1.6.0.0 contains an integer underflow vulnerability in AP4_AvccAtom::Create() and AP4_HvccAtom::Create()
    cvelistv5