CVE-2026-32814

Description

A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. When processing a specially crafted HEIF or AVIF image containing a corrupted grid tile, the library fails to properly initialize memory. This can lead to an information disclosure, where uninitialized heap memory, potentially containing sensitive data such as authentication tokens or other user information, is exposed as part of the decoded image's pixel values. An attacker could exploit this by providing a malicious file, leading to the leakage of internal system data.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score6.5N/AN/A
Attack VectorNetworkN/AN/A
Attack ComplexityLowN/AN/A
Privileges RequiredNoneN/AN/A
User InteractionRequiredN/AN/A
ScopeUnchangedN/AN/A
ConfidentialityHighN/AN/A
Integrity ImpactNoneN/AN/A
Availability ImpactNoneN/AN/A

Vector

Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Understanding the Weakness (CWE)

CWE-908

Confidentiality

Technical Impact: Read Memory; Read Application Data

When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.

Availability

Technical Impact: DoS: Crash, Exit, or Restart

The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.

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