CVE-2026-42217

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, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.

Affected Software

VendorProductVersion RangeStatus
AcademySoftwareFoundationopenexr>= 3.0.0, < 3.2.9affected
AcademySoftwareFoundationopenexr>= 3.3.0, < 3.3.11affected
AcademySoftwareFoundationopenexr>= 3.4.0, < 3.4.11affected

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References