---
id: CVE-2026-88384
title: >-
  OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute
  parsing path
summary: >-
  OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute
  parsing path. A specially crafted EXR file containing an unknown-type
  attribute with dataSize set to zero causes the parser to create an opaque
  attribute with a NULL…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:08:22.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88384'
references:
  - url: 'https://github.com/AcademySoftwareFoundation/openexr/issues/2612'
    label: cve@mitre.org
  - url: 'https://github.com/AcademySoftwareFoundation/openexr/pull/2615'
    label: cve@mitre.org
  - url: >-
      https://github.com/AcademySoftwareFoundation/openexr/pull/2615/changes/70ddecfe82d2566f3776b8ed923939afd47baca2
    label: cve@mitre.org
  - url: 'https://github.com/AcademySoftwareFoundation/openexr/issues/2612'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88384.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-88384'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540499'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-88384'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88384'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T18:17:56.727213Z'
ingestedAt: '2026-09-24T16:47:15.852Z'
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
  - enterprise_linux 9
---

## Overview

OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path. A specially crafted EXR file containing an unknown-type attribute with dataSize set to zero causes the parser to create an opaque attribute with a NULL packed_data pointer. The OpaqueAttribute constructor passes the NULL pointer to memcpy() without validating the zero-size condition, resulting in undefined behavior and process termination, leading to denial of service.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88384.json)