{"id":"CVE-2026-63422","title":"OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation","summary":"OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple o…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-122","CWE-787"],"vendor":"openimageio","product":"openimageio","affected":["openimageio < 3.0.21.0","openimageio >= 3.1.0.0, <= 3.1.16.0","openimageio = 3.2.0.0","openimageio = 3.2.0.2"],"patched":["openimageio 3.0.21.0"],"published":"2026-09-18","updated":"2026-09-29","sourceUpdated":"2026-09-29T18:56:15.287","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63422","references":[{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/7303134f13b0f9dc738b8ecabecd8c9f90cbd4c9","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5295","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0","label":"security-advisories@github.com"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-xh5r-whph-qmc5","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00206,"epssPercentile":0.10578,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-18T19:24:31.356177Z"},"ingestedAt":"2026-09-18T16:45:41.388Z","slug":"CVE-2026-63422","body":"## Overview\n\nOpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.\n\n## Affected\n\n- `openimageio < 3.0.21.0`\n- `openimageio >= 3.1.0.0, <= 3.1.16.0`\n- `openimageio = 3.2.0.0`\n- `openimageio = 3.2.0.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `openimageio 3.0.21.0`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}