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Fencer Vulns
high 7.4

CVE-2026-27622 json

OpenEXR CompositeDeepScanLine integer-overflow leads to heap OOB write

published 2026-03-02 8 mo ago modified 2026-09-09 2 mo ago also EUVD-2026-9342 , GHSA-cr4v-6jm6-4963 , JLSEC-2026-141 , PYSEC-2026-2846

cvss
7.4
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 15%
public exploits
0
none known

Summary

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.

Patch / fix

  • pypi openexr 3.2.6, 3.3.8, 3.4.6
  • julia OpenEXR_jll 3.4.8+0
  • Red Hat Red Hat Enterprise Linux 10 0:3.1.10-8.el10_1.1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.1.10-8.el10_0.1
  • Red Hat Red Hat Enterprise Linux 8 0:2.2.0-12.el8_10.1
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.2.0-11.el8_2.1
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.2.0-12.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.2.0-12.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.2.0-12.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.2.0-12.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.2.0-12.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.2.0-12.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.2.0-12.el8_8.1
  • Red Hat Red Hat Enterprise Linux 9 0:3.1.1-3.el9_7.1
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:3.1.1-2.el9_0.2
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.1.1-2.el9_2.2
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:3.1.1-2.el9_4.2
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:3.1.1-3.el9_6.1
  • Red Hat Red Hat AI Inference Server 3.3 1778244531, 1778244546, 1778244559, 1778274666
  • openexr Debian 14 3.4.6+ds-1

debian advisories DEBIAN-CVE-2026-27622

  • openexr Ubuntu Pro 16.04 LTS 2.2.0-10ubuntu2.6+esm4
  • openexr Ubuntu Pro 18.04 LTS 2.2.0-11.1ubuntu1.9+esm1
  • openexr Ubuntu Pro 20.04 LTS 2.3.0-6ubuntu0.5+esm2
  • openexr Ubuntu Pro 22.04 LTS 2.5.7-1ubuntu0.1~esm2
  • openexr Ubuntu Pro 24.04 LTS 3.1.5-5.1ubuntu0.1~esm1
  • openexr Ubuntu Pro 26.04 LTS 3.1.13-2ubuntu0.26.04.1~esm1

ubuntu advisories UBUNTU-CVE-2026-27622

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openexr RHEL 9 3.1.1-3.el9_7.1
  • openexr-libs RHEL 9 3.1.1-3.el9_7.1
  • OpenEXR RHEL 8 2.2.0-12.el8_10.1
  • OpenEXR-libs RHEL 8 2.2.0-12.el8_10.1
  • openexr RHEL 10.1 3.1.10-8.el10_1.1
  • openexr-libs RHEL 10.1 3.1.10-8.el10_1.1
  • OpenEXR RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 2.2.0-12.el8_6.1
  • OpenEXR-libs RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 2.2.0-12.el8_6.1

red hat advisories RHSA-2026:12339RHSA-2026:12340RHSA-2026:12341RHSA-2026:12338RHSA-2026:8888RHSA-2026:8872

  • openexr SLES for SAP applications 16.0, SLES 16.0 3.2.2-160000.5.1

suse advisories SUSE-SU-2026:20936-1

  • openexr openSUSE Leap 16.0 3.2.2-160000.5.1
  • openexr openSUSE Tumbleweed 3.4.6-1.1

opensuse advisories openSUSE-SU-2026:20433-1openSUSE-SU-2026:10303-1

  • OpenEXR-libs AlmaLinux 8 2.2.0-12.el8_10.1
  • openexr AlmaLinux 9 3.1.1-3.el9_7.1
  • openexr-libs AlmaLinux 9 3.1.1-3.el9_7.1
  • openexr AlmaLinux 10 3.1.10-8.el10_1.1
  • openexr-libs AlmaLinux 10 3.1.10-8.el10_1.1

almalinux advisories ALSA-2026:8863ALSA-2026:8888ALSA-2026:7682

  • OpenEXR Rocky Linux 8 2.2.0-12.el8_10.1
  • openexr Rocky Linux 9 3.1.1-3.el9_7.1
  • openexr Rocky Linux 10 3.1.10-8.el10_1.1

rocky linux advisories RLSA-2026:8863RLSA-2026:8888RLSA-2026:7682

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-2026-27622 updated cvss 7.4

openexr: OpenEXR: Arbitrary code execution via integer overflow in EXR file processing

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat AI Inference Server 3.3 rhaiis 1778244531, rhaiis 1778244546, rhaiis 1778244559, rhaiis 1778274666
    fixed: vendor fix RHSA-2026:16008
  • Red Hat CodeReady Linux Builder EUS (v.9.4) openexr-devel 3.1.1-2.el9_4.2, openexr-debuginfo 3.1.1-2.el9_4.2, openexr-debugsource 3.1.1-2.el9_4.2, openexr-libs-debuginfo 3.1.1-2.el9_4.2
    fixed: vendor fix RHSA-2026:8871
  • Red Hat CodeReady Linux Builder EUS (v.9.6) openexr-devel 3.1.1-3.el9_6.1, openexr-debuginfo 3.1.1-3.el9_6.1, openexr-debugsource 3.1.1-3.el9_6.1, openexr-libs-debuginfo 3.1.1-3.el9_6.1
    fixed: vendor fix RHSA-2026:8872
  • Red Hat Enterprise Linux AppStream (v. 8) OpenEXR 2.2.0-12.el8_10.1, OpenEXR-libs 2.2.0-12.el8_10.1
    fixed: vendor fix RHSA-2026:8863
  • Red Hat Enterprise Linux AppStream (v. 9) openexr 3.1.1-3.el9_7.1, openexr-libs 3.1.1-3.el9_7.1
    fixed: vendor fix RHSA-2026:8888
  • Red Hat Enterprise Linux AppStream (v. 10) openexr 3.1.10-8.el10_1.1, openexr-libs 3.1.10-8.el10_1.1
    fixed: vendor fix RHSA-2026:7682
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) OpenEXR 2.2.0-11.el8_2.1, OpenEXR-libs 2.2.0-11.el8_2.1
    fixed: vendor fix RHSA-2026:12340
show 15 more
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) OpenEXR 2.2.0-12.el8_4.1, OpenEXR-libs 2.2.0-12.el8_4.1
    fixed: vendor fix RHSA-2026:12341
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) OpenEXR 2.2.0-12.el8_6.1, OpenEXR-libs 2.2.0-12.el8_6.1 Red Hat Enterprise Linux AppStream E4S (v.8.6) OpenEXR 2.2.0-12.el8_6.1, OpenEXR-libs 2.2.0-12.el8_6.1
    fixed: vendor fix RHSA-2026:12339
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) OpenEXR 2.2.0-12.el8_8.1, OpenEXR-libs 2.2.0-12.el8_8.1
    fixed: vendor fix RHSA-2026:12338
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) openexr 3.1.1-2.el9_0.2, openexr-libs 3.1.1-2.el9_0.2
    fixed: vendor fix RHSA-2026:8870
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) openexr 3.1.1-2.el9_2.2, openexr-libs 3.1.1-2.el9_2.2
    fixed: vendor fix RHSA-2026:8869
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) openexr 3.1.10-8.el10_0.1, openexr-libs 3.1.10-8.el10_0.1
    fixed: vendor fix RHSA-2026:7678
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) openexr 3.1.1-2.el9_4.2, openexr-libs 3.1.1-2.el9_4.2
    fixed: vendor fix RHSA-2026:8871
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) openexr 3.1.1-3.el9_6.1, openexr-libs 3.1.1-3.el9_6.1
    fixed: vendor fix RHSA-2026:8872
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) OpenEXR 2.2.0-12.el8_4.1, OpenEXR-libs 2.2.0-12.el8_4.1
    fixed: vendor fix RHSA-2026:12341
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) OpenEXR 2.2.0-12.el8_6.1, OpenEXR-libs 2.2.0-12.el8_6.1
    fixed: vendor fix RHSA-2026:12339
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) OpenEXR 2.2.0-12.el8_8.1, OpenEXR-libs 2.2.0-12.el8_8.1
    fixed: vendor fix RHSA-2026:12338
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) openexr-devel 3.1.1-3.el9_7.1, openexr-debuginfo 3.1.1-3.el9_7.1, openexr-debugsource 3.1.1-3.el9_7.1, openexr-libs-debuginfo 3.1.1-3.el9_7.1
    fixed: vendor fix RHSA-2026:8888
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) openexr-devel 3.1.10-8.el10_1.1, openexr-debuginfo 3.1.10-8.el10_1.1, openexr-debugsource 3.1.10-8.el10_1.1, openexr-libs-debuginfo 3.1.10-8.el10_1.1
    fixed: vendor fix RHSA-2026:7682
  • Red Hat Enterprise Linux CRB (v. 8) OpenEXR-devel 2.2.0-12.el8_10.1, OpenEXR-debuginfo 2.2.0-12.el8_10.1, OpenEXR-debugsource 2.2.0-12.el8_10.1, OpenEXR-libs-debuginfo 2.2.0-12.el8_10.1
    fixed: vendor fix RHSA-2026:8863
  • Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux AppStream EUS (v. 10.0) openexr-debuginfo 3.1.10-8.el10_0.1, openexr-debugsource 3.1.10-8.el10_0.1, openexr-libs-debuginfo 3.1.10-8.el10_0.1 Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) openexr-devel 3.1.10-8.el10_0.1, openexr-debuginfo 3.1.10-8.el10_0.1, openexr-debugsource 3.1.10-8.el10_0.1, openexr-libs-debuginfo 3.1.10-8.el10_0.1
    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
none
Automatable
no
Technical impact
total
Assessed
8 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-cr4v-6jm6-4963 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADP 3.1 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi openexr
>=2.3.0, <3.2.6
>=3.3.0, <3.3.8
>=3.4.0, <3.4.6
3.2.6
3.3.8
3.4.6
julia OpenEXR_jll
<3.4.8+0
3.4.8+0

Affected products

  • AcademySoftwareFoundation openexr
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat AI Inference Server 3.3
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

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.