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TI-2026-29038 Aliases CVE-2026-40244

OpenEXR has integer overflow in DWA setupChannelData planarUncRle pointer arithmetic (missed variant of CVE-2026-34589)

Priority LOW 39CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix Fixed openexr (AcademySoftwareFoundation): 3.2.8, 3.3.10, 3.4.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AcademySoftwareFoundationopenexr3.2.0 to before 3.2.8; 3.3.0 to before 3.3.10; 3.4.0 to before 3.4.103.2.8, 3.3.10, 3.4.10Patch availableCNA
  • openexr VendorAcademySoftwareFoundation Affected 3.2.0 to before 3.2.8; 3.3.0 to before 3.3.10; 3.4.0 to before 3.4.10 Fixed in 3.2.8, 3.3.10, 3.4.10 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*3.2.0 to before 3.2.8; 3.3.0 to before 3.3.10; 3.4.0 to before 3.4.10VulnerableAcademy Software Foundation
  • cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* Versions 3.2.0 to before 3.2.8; 3.3.0 to before 3.3.10; 3.4.0 to before 3.4.10 Vulnerable ·Academy Software Foundation

Remediation

  • Fix · CNA openexr (AcademySoftwareFoundation) Fixed in 3.2.8, 3.3.10, 3.4.10

Vendor assessments

Red Hat

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

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40244

References

Advisory 1

Other 3

  • 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