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Fencer Intel
medium 5.5

CVE-2026-88384 json

OpenEXR 3.4.14 contains a NULL Pointer Dereference in the C++ attribute parsing path.

published last mo. modified last mo. also EUVD-2026-86273

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

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 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.

Patch / fix

  • openexr Debian 14 3.4.16+ds-1

debian advisories DEBIAN-CVE-2026-88384

  • openexr SLE Module for Desktop Applications 15 SP7 2.2.1-150000.3.58.1
  • openexr SLES for SAP applications 16.0, SLES 16.0 3.2.2-160000.11.1
  • openexr SLES LTSS Extended Security 12 SP5 2.1.0-6.54.1

suse advisories SUSE-SU-2026:4828-1SUSE-SU-2026:4532-1SUSE-SU-2026:24012-1

  • openexr openSUSE Leap 16.0 3.2.2-160000.11.1
  • openexr openSUSE Tumbleweed 3.4.15-1.1

opensuse advisories openSUSE-SU-2026:22013-1openSUSE-SU-2026:11934-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-88384 updated cvss 5.5

openexr: openexr: Denial of Service via crafted EXR file

  • Red Hat Enterprise Linux 9 openexr, openexr-libs Red Hat Enterprise Linux 10 openexr
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/openexr/issues/2612 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

Weakness

References

Sources

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