CVE-2026-88384CWE-476

CVE-2026-88384

Medium · published September 24, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
8.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00193 · 8.5th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-09-24T21:17Z
References (4)
https://github.com/AcademySoftwareFoundation/openexr/issues/2612 · [email protected]https://github.com/AcademySoftwareFoundation/openexr/pull/2615 · [email protected]https://github.com/AcademySoftwareFoundation/openexr/pull/2615/changes/70ddecfe82d2566f3776b8ed923939afd47baca2 · [email protected]https://github.com/AcademySoftwareFoundation/openexr/issues/2612 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 26 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 24 SEP 00:00Z
    OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path
    cvelistv5