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Fencer Vulns
high 7.1

CVE-2026-68515 json

OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union

published 2026-08-25 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-65744

cvss
7.1
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 8%
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 before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Patch / fix

  • openexr openexr 3.2.11, 3.3.13, 3.4.14
  • openexr Debian 14 3.4.14-0.1

debian advisories DEBIAN-CVE-2026-68515

  • OpenEXR RHEL 8 2.2.0-12.el8_10.3
  • OpenEXR-libs RHEL 8 2.2.0-12.el8_10.3
  • openexr RHEL 9 3.1.1-3.el9_8.4
  • openexr-libs RHEL 9 3.1.1-3.el9_8.4
  • openexr RHEL 10.2 3.1.10-8.el10_2.4
  • openexr-libs RHEL 10.2 3.1.10-8.el10_2.4

red hat advisories RHSA-2026:82345RHSA-2026:69608RHSA-2026:69609

  • openexr SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 2.2.1-150000.3.55.1
  • openexr SLES for SAP applications 16.0, SLES 16.0 3.2.2-160000.10.1
  • openexr SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.1.0-6.51.1

suse advisories SUSE-SU-2026:4005-1SUSE-SU-2026:4003-1SUSE-SU-2026:23604-1

  • python-OpenEXR openSUSE Tumbleweed 3.4.16-1.1
  • openexr openSUSE Leap 16.0 3.2.2-160000.10.1
  • openexr openSUSE Tumbleweed 3.4.14-1.1

opensuse advisories openSUSE-SU-2026:12184-1openSUSE-SU-2026:21737-1openSUSE-SU-2026:11612-1

  • OpenEXR-libs AlmaLinux 8 2.2.0-12.el8_10.3
  • openexr AlmaLinux 9 3.1.1-3.el9_8.4
  • openexr-libs AlmaLinux 9 3.1.1-3.el9_8.4
  • openexr AlmaLinux 10 3.1.10-8.el10_2.4
  • openexr-libs AlmaLinux 10 3.1.10-8.el10_2.4

almalinux advisories ALSA-2026:82345ALSA-2026:69608ALSA-2026:69609

  • OpenEXR Rocky Linux 8 2.2.0-12.el8_10.3
  • openexr Rocky Linux 10 3.1.10-8.el10_2.4
  • openexr Rocky Linux 9 3.1.1-3.el9_8.4

rocky linux advisories RLSA-2026:82345RLSA-2026:69609RLSA-2026:69608

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-2026-68515 updated cvss 7.1

OpenEXR: OpenEXR: Heap out-of-bounds write in exrmultiview via crafted EXR files

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) OpenEXR 2.2.0-12.el8_10.3, OpenEXR-libs 2.2.0-12.el8_10.3
    fixed: vendor fix RHSA-2026:82345
  • Red Hat Enterprise Linux AppStream (v. 9) openexr 3.1.1-3.el9_8.4, openexr-libs 3.1.1-3.el9_8.4
    fixed: vendor fix RHSA-2026:69608
  • Red Hat Enterprise Linux AppStream (v. 10) openexr 3.1.10-8.el10_2.4, openexr-libs 3.1.10-8.el10_2.4
    fixed: vendor fix RHSA-2026:69609
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) openexr-devel 3.1.1-3.el9_8.4, openexr-debuginfo 3.1.1-3.el9_8.4, openexr-debugsource 3.1.1-3.el9_8.4, openexr-libs-debuginfo 3.1.1-3.el9_8.4
    fixed: vendor fix RHSA-2026:69608
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) openexr-devel 3.1.10-8.el10_2.4, openexr-debuginfo 3.1.10-8.el10_2.4, openexr-debugsource 3.1.10-8.el10_2.4, openexr-libs-debuginfo 3.1.10-8.el10_2.4
    fixed: vendor fix RHSA-2026:69609
  • Red Hat Enterprise Linux CRB (v. 8) OpenEXR-devel 2.2.0-12.el8_10.3, OpenEXR-debuginfo 2.2.0-12.el8_10.3, OpenEXR-debugsource 2.2.0-12.el8_10.3, OpenEXR-libs-debuginfo 2.2.0-12.el8_10.3
    fixed: vendor fix RHSA-2026:82345
  • Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs
    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
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjf7-wjjw-xq56 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected products

  • AcademySoftwareFoundation openexr

Classification

Weakness

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.