CVE Database›Document archive›CVE-2026-40244

CVE-2026-40244

OpenEXR: OpenEXR: Arbitrary code execution via integer overflow in EXR image processing

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Severity

Important

Red Hat Product Security

8.2

CVSS 3.1

Review impact separately from score.

Published · April 21, 2026

Updated · November 5, 2026

Description

A flaw was found in OpenEXR, an image storage format library. An integer overflow vulnerability exists when processing specially crafted EXR image files. A local user could exploit this by tricking a victim into opening a malicious EXR file. This flaw could lead to memory corruption, potentially allowing for arbitrary code execution or causing a denial of service (DoS) on the affected system.

Statement

Important: This flaw in OpenEXR is not applicable to Red Hat Enterprise Linux products as the vulnerable code is not present. The vulnerability affects Fedora, where an integer overflow in EXR image processing could lead to arbitrary code execution or denial of service if a local user is tricked into opening a malicious EXR file.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CWE-190 · Integer Overflow or Wraparound