{"id":"CVE-2026-67549","aliases":["EUVD-2026-83134","GHSA-3wxw-rqhw-j2w4","UBUNTU-CVE-2026-67549","openSUSE-SU-2026:11442-1"],"status":"published","title":"OpenImageIO: TIFF 1-bit CMYK bit conversion heap out-of-bounds write","description":"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":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00288,"percentile":0.21633,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122","CWE-131","CWE-787"],"published":"2026-08-04T00:00:00Z","modified":"2026-10-28T11:17:12Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.17~dfsg0-1ubuntu2","1.5.20~dfsg0-1ubuntu2","1.5.23~dfsg0-1ubuntu1","1.6.9~dfsg0-4ubuntu1","1.6.10~dfsg0-1ubuntu1","1.6.10~dfsg0-2ubuntu1","1.6.11~dfsg0-1ubuntu1","1.6.11~dfsg0-1ubuntu1+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.17~dfsg0-1ubuntu5","1.7.17~dfsg0-1ubuntu2","1.7.17~dfsg0-1ubuntu2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.10~dfsg0-1","2.0.11~dfsg0-1","2.0.12~dfsg0-1","2.0.12~dfsg0-1build1","2.0.12~dfsg0-1build2","2.1.10.1~dfsg0-5ubuntu4","2.1.10.1~dfsg0-5ubuntu5","2.1.12.0~dfsg0-1","2.1.12.0~dfsg0-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.10.1+dfsg-1build1","2.2.18.0+dfsg-1","2.2.18.0+dfsg-1build2","2.2.18.0+dfsg-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.14.0+dfsg-1","2.4.16.0+dfsg-1","2.4.16.0+dfsg-1build1","2.4.17.0+dfsg-1","2.4.17.0+dfsg-1build1","2.4.17.0+dfsg-1.1build3","2.4.17.0+dfsg-1.1build4","2.4.17.0+dfsg-1.1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.19.1+dfsg-2","2.5.19.1+dfsg-2build1","2.5.19.1+dfsg-2build2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"openimageio","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.18.0+dfsg-1build2","2.5.19.1+dfsg-1build1","2.5.19.1+dfsg-1build3","2.5.19.1+dfsg-1build5","2.5.19.1+dfsg-2","2.5.19.1+dfsg-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"OpenImageIO","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.16.0-1.1"}]}],"bundled":8}],"products":[{"vendor":"academysoftwarefoundation","product":"openimageio"},{"vendor":"openimageio","product":"openimageio"}],"references":[{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-3wxw-rqhw-j2w4","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory","report"]},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5296","tags":["x_refsource_MISC","Issue Tracking","Patch","fix","report"]},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/6e9b86ee4cce8fd7bed6cfb101a266d8f8a296d4","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0","tags":["x_refsource_MISC","Release Notes","web","report"]},{"url":"https://github.com/user-attachments/files/29615314/poc.zip","tags":["exploit","Exploit","evidence"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67549.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67549","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-67549","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67549","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63419","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63420","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63422","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63635","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63638","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65969","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-65970","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-67549","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-67549","title":"OpenImageIO: TIFF 1-bit CMYK bit conversion heap out-of-bounds write","description":"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.","status":"published","published":"2026-09-18T15:49:38.085Z","modified":"2026-09-24T20:57:37.31Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-122","CWE-131","CWE-787"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-83134","description":"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.","status":"published","published":"2026-09-18T15:49:38Z","modified":"2026-09-24T20:57:37Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:56.296478Z"}],"nvd":[{"id":"CVE-2026-67549","description":"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.","status":"published","published":"2026-09-18T16:17:08.733Z","modified":"2026-09-29T18:55:09.35Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122","CWE-131","CWE-787"],"updated_at":"2026-11-02T14:12:49.70655Z"}],"osv":[{"id":"CVE-2026-67549","title":"OpenImageIO: TIFF 1-bit CMYK bit conversion heap out-of-bounds write","description":"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.","status":"published","published":"2026-09-18T15:49:38.085Z","modified":"2026-10-28T11:17:12.691494694Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-122","CWE-131","CWE-787"],"updated_at":"2026-11-02T15:45:14.46177Z"},{"id":"UBUNTU-CVE-2026-67549","description":"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.","status":"published","published":"2026-09-18T16:17:00Z","modified":"2026-10-17T13:00:39.051830789Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:53.710209Z"},{"id":"openSUSE-SU-2026:11442-1","title":"OpenImageIO-3.1.16.0-1.1 on GA media","description":"These are all security issues fixed in the OpenImageIO-3.1.16.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-08-04T00:00:00Z","modified":"2026-08-05T18:23:51.073114674Z","updated_at":"2026-11-02T16:58:39.516824Z"}]}}