CVE-2026-67549 (GCVE-0-2026-67549)

Vulnerability from cvelistv5 – Published: 2026-09-18 15:49 – Updated: 2026-09-24 20:57
VLAI
Title
OpenImageIO: TIFF 1-bit CMYK bit conversion heap out-of-bounds write
Summary
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.1.16.0, A crafted 1-bit contiguous cmyk tiff is exposed through a native uint1 imagespec, so callers allocate a bit-packed buffer. tiffinput::read_native_scanline_locked() nevertheless invokes tiffinput::bit_convert() with 8-bit output and writes one expanded byte per value into that smaller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/tiff.imageio/tiffinput.cpp, TIFFInput::bit_convert(), TIFFInput::read_native_scanline_locked(), PHOTOMETRIC_SEPARATED, 1-bit CMYK, and native uint1 ImageSpec, which define the relevant source path, functions, state, and trigger. This issue is fixed in 3.1.16.0.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 20:57 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
  • CWE-131 - Incorrect Calculation of Buffer Size
  • CWE-787 - Out-of-bounds Write
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7661 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AcademySoftwareFoundation OpenImageIO Affected: < 3.1.16.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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