CVE-2026-40244

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.

Affected Software

VendorProductVersion RangeStatus
AcademySoftwareFoundationopenexr>= 3.2.0, < 3.2.8affected
AcademySoftwareFoundationopenexr>= 3.3.0, < 3.3.10affected
AcademySoftwareFoundationopenexr>= 3.4.0, < 3.4.10affected

Weaknesses

  • CWE-190: CWE-190: Integer Overflow or Wraparound

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

OpenEXR: OpenEXR: Arbitrary code execution via integer overflow in EXR image processing

Additional References

References