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TI-2026-30537 Aliases CVE-2026-42216

OpenEXR: Out-of-bounds read in `IDManifest::init()` during prefix expansion

Priority HIGH 77CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 12 fixed, 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, IDManifest::init() reconstructs strings from a prefix-compressed representation. If the previous string is longer than 255 bytes, the next string is expected to begin with a 2-byte prefix length. The code reads stringList[i][0] and stringList[i][1] without checking that the current string has at least two bytes. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00465 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial openexr (AcademySoftwareFoundation): 3.2.9, 3.3.11, 3.4.11Red Hat: 16 advisoriesRed Hat: 12 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AcademySoftwareFoundationopenexr3.0.0 to before 3.2.9; 3.3.0 to before 3.3.11; 3.4.0 to before 3.4.113.2.9, 3.3.11, 3.4.11Patch availableCNA
  • openexr VendorAcademySoftwareFoundation Affected 3.0.0 to before 3.2.9; 3.3.0 to before 3.3.11; 3.4.0 to before 3.4.11 Fixed in 3.2.9, 3.3.11, 3.4.11 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*3.0.0 to before 3.2.9; 3.3.0 to before 3.3.11; 3.4.0 to before 3.4.11VulnerableAcademy Software Foundation
  • cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.2.9; 3.3.0 to before 3.3.11; 3.4.0 to before 3.4.11 Vulnerable ·Academy Software Foundation

Remediation

  • Fix · CNA openexr (AcademySoftwareFoundation) Fixed in 3.2.9, 3.3.11, 3.4.11

Red Hat 16 advisories

  • RHSA-2026:81128 Released 2026-10-12 · Red Hat rating Important
    Red Hat AI Base Images 3.2.4 (CPU)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-cpu-rhel9
  • RHSA-2026:80760 Released 2026-10-12 · Red Hat rating Important
    Red Hat AI Base Images 3.2.4 (Spyre)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-spyre-rhel9
  • RHSA-2026:80739 Released 2026-10-12 · Red Hat rating Important
    Red Hat AI Base Images 3.2.4 (CUDA 12.9)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-cuda-rhel9
Show 13 more Red Hat advisories
  • RHSA-2026:74674 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.4.3 (Neuron)
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhai/base-image-neuron-rhel9
  • RHSA-2026:74463 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (ROCm 7.0)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-rocm-rhel9
  • RHSA-2026:74462 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (CUDA 12.9)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-cuda-rhel9
  • RHSA-2026:74461 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (Spyre)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-spyre-rhel9
  • RHSA-2026:74460 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (CPU)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-cpu-rhel9
  • RHSA-2026:74459 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (ROCm 6.4)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-rocm-rhel9
  • RHSA-2026:74458 Released 2026-10-01 · Red Hat rating Important
    Red Hat AI Base Images 3.2.3 (TPU)
    • Red Hat OpenShift AI 3.2 registry.redhat.io/rhai/base-image-tpu-rhel9
  • RHSA-2026:39025 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) openexr-devel-3.1.1-3.el9_6.3
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) openexr-3.1.1-3.el9_6.3, openexr-libs-3.1.1-3.el9_6.3
  • RHSA-2026:39026 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) openexr-3.1.1-2.el9_4.4, openexr-libs-3.1.1-2.el9_4.4
  • RHSA-2026:39027 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) openexr-3.1.1-2.el9_2.4, openexr-libs-3.1.1-2.el9_2.4
  • RHSA-2026:39024 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) openexr-3.1.10-8.el10_0.3, openexr-libs-3.1.10-8.el10_0.3
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) openexr-devel-3.1.10-8.el10_0.3
  • RHSA-2026:38498 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat Enterprise Linux AppStream (v. 9) openexr-3.1.1-3.el9_8.3, openexr-libs-3.1.1-3.el9_8.3
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) openexr-devel-3.1.1-3.el9_8.3
  • RHSA-2026:38499 Released 2026-07-13 · Red Hat rating Important
    openexr security update
    • Red Hat Enterprise Linux AppStream (v. 10) openexr-3.1.10-8.el10_2.3, openexr-libs-3.1.10-8.el10_2.3
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) openexr-devel-3.1.10-8.el10_2.3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:39025
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:38499
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:38498
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:39027
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:39026
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:39024
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:39025
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:38499
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:38498
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:39024
Red Hat OpenShift AI 3.2Fixed RHSA-2026:74458, RHSA-2026:74459, RHSA-2026:74460, RHSA-2026:74461, RHSA-2026:74462, RHSA-2026:74463, RHSA-2026:80739, RHSA-2026:80760, RHSA-2026:81128
Red Hat OpenShift AI 3.4Fixed RHSA-2026:74674
Not affected: 2 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42216
  2. 2026-10-13 Fix available: RHSA-2026:80739 · Red Hat
  3. 2026-10-13 Fix available: RHSA-2026:80760 · Red Hat
  4. 2026-10-13 Fix available: RHSA-2026:81128 · Red Hat
  5. 2026-10-13 Affected versions changed · Red Hat
  6. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

  • TI-2026-30739 OpenColorIO vulnerable to stack buffer overflow via unbounded `sscanf %s` in Spi3D (.spi3d) LUT parser CVSS 4.0HIGH 8.4
  • TI-2026-38605 OpenEXR: Unhandled assert abort in HTJ2K decoder via crafted QCD marker (DoS) CVSS 4.0HIGH 7.1
  • TI-2026-48281 OpenEXR: Heap out-of-bounds write in exrmultiview with subsampled channel union CVSS 3.1HIGH 7.1
  • TI-2026-48279 OpenEXR: Heap buffer overflow in PyOpenEXR from literal/prefixed RGB channel name collision CVSS 3.1HIGH 7.1
  • TI-2026-42768 OpenEXR: Heap OOB read in SampleCountChannel row when using nonzero dataWindow CVSS 3.1HIGH 7.1
  • TI-2026-42338 OpenEXR: Out-of-bounds read in DeepImageChannel::row() for non-zero dataWindow origin CVSS 3.1HIGH 7.1
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences