CVE-2026-32738

medium Red Hat
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Published: May 19, 2026 (51 days ago)
Last Modified: May 19, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker could exploit this vulnerability by providing a specially crafted HEIF sequence file. This file, with `samples_per_chunk=0`, triggers an unsigned integer underflow, causing the library to map all samples to an empty chunk. When any sample is accessed, the library attempts to read from an invalid memory location, leading to a denial of service due to a guaranteed crash.

CWE

CWE-191

Affected Products

Red Hat Enterprise Linux 10

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com