CVE-2026-67549High· 7.6▾ MidnightPoC availableOpenImageIO 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 cal…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.8 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.4%
Exploit / PoC code exists
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-63422High· 7.8OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation
CVE-2026-63638High· 8.3OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation
CVE-2026-63419High· 7.8OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation
CVE-2026-65970Medium· 5.3OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation
CVE-2026-63635Medium· 5.5OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation
CVE-2026-63420Medium· 5.5OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation