{"id":"CVE-2026-113681","title":"OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 Cineon Reader Heap Out-of-Bounds Read","summary":"OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-190"],"vendor":"AcademySoftwareFoundation","product":"OpenImageIO","affected":["OpenImageIO < 3.0.20.0","OpenImageIO >= 3.1.0.0 < 3.1.15.0","OpenImageIO >= 3.2.0.0-dev < 3.2.0.3-beta1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-20T16:21:27.916905Z"},"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T16:21:37.806Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113681","references":[{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5567"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5568"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/07e3c3e0373551c57e7d8e01353deaa4b3646613"},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/blob/v3.0.19.0/src/cineon.imageio/libcineon/Codec.cpp#L79-L82"},{"url":"https://www.vulncheck.com/advisories/openimageio-before-3.0.20.0-3.1-x-before-3.1.15.0-and-3.2-x-before-3.2.0.3-beta1-cineon-reader-heap-out-of-bounds-read","label":"VulnCheck Advisory: OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 Cineon Reader Heap Out-of-Bounds Read"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.298Z","slug":"CVE-2026-113681","body":"## Overview\n\nOpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted Cineon file with a huge declared width that wraps the size calculation to zero, so UnPackPacked reads past a 4-byte buffer and crashes the application.\n\n## Affected\n\n- `OpenImageIO < 3.0.20.0`\n- `OpenImageIO >= 3.1.0.0 < 3.1.15.0`\n- `OpenImageIO >= 3.2.0.0-dev < 3.2.0.3-beta1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}