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Fencer Vulns
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CVE-2026-54920 json

OpenEXR: Integer overflow and uninitialized pointer cause invalid delete in OpenEXRUtil image resize

published 2026-08-25 2 mo ago modified 2026-10-12 27 d ago also EUVD-2026-65182

cvss
0.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.12, a reachable assertion failure in the HTJ2K decode path allows a crafted HTJ2K-compressed EXR file to cause an unconditional process abort in any application that calls exr_start_read() on untrusted input, resulting in denial of service. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library while constructing the codestream and evaluating its quantization delta parameters. OpenJPH uses an assertion rather than a recoverable error to validate those bits, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling, a problem compounded by OpenEXR wrapping only its internal HT header parser in error handling while leaving the later codestream read and construction calls unprotected. This issue has been resolved in version 3.4.13.

Patch / fix

  • openexr openexr 3.2.10, 3.3.12, 3.4.13
  • openexr Debian 14 3.4.14-0.1

debian advisories DEBIAN-CVE-2026-54920

  • openexr SLE Module for Desktop Applications 15 SP7 2.2.1-150000.3.52.1
  • openexr SLES for SAP applications 16.0, SLES 16.0 3.2.2-160000.9.1
  • openexr SLES LTSS Extended Security 12 SP5 2.1.0-6.48.1

suse advisories SUSE-SU-2026:3169-1SUSE-SU-2026:3168-1SUSE-SU-2026:22653-1

  • openexr openSUSE Leap 16.0 3.2.2-160000.9.1
  • openexr openSUSE Tumbleweed 3.4.13-1.1

opensuse advisories openSUSE-SU-2026:21336-1openSUSE-SU-2026:11218-1

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-2026-54920 updated cvss 6.5

openexr: OpenEXR: Denial of Service via crafted HTJ2K-compressed EXR file

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 8 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 9 openexr, openexr-libs Red Hat Enterprise Linux 10 openexr
    not affected: vulnerable code not present

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
yes
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-fp75-87pr-8329 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 0.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

Affected products

  • AcademySoftwareFoundation openexr

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
  • CWE-824 Access of Uninitialized Pointer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.