CVE-2026-40244
OpenEXR: OpenEXR: Arbitrary code execution via integer overflow in EXR image processing
Severity
ImportantRed Hat Product Security
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 · 8.2CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE-190 · Integer Overflow or Wraparound