CVEvulnerability

CVE-2026-96611

7.8 HIGH Published 2026-09-23 Modified 2026-10-15 Official page ↗
Status
Analyzed
Published
2026-09-23
Last modified
2026-10-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.9 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-190

Description

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.

Affected configurations

• ffmpeg ffmpeg (< 9.0)

Related

Weakness · CWE (1)

  • CWE-190 Integer Overflow or Wraparound weakness

References