{"schemaVersion":3,"id":"CVE-2026-27622","aliases":["SUSE-SU-2026:20936-1","GHSA-cr4v-6jm6-4963","PYSEC-2026-2846","RHSA-2026:12338","RHSA-2026:12339","RHSA-2026:12340","RHSA-2026:12341","RHSA-2026:7678","RHSA-2026:7682","RHSA-2026:8863","RHSA-2026:8869","RHSA-2026:8870","RHSA-2026:8871","RHSA-2026:8872","RHSA-2026:8888","UBUNTU-CVE-2026-27622","DEBIAN-CVE-2026-27622","openSUSE-SU-2026:10303-1","openSUSE-SU-2026:20433-1"],"status":"published","duplicateOf":null,"title":null,"description":"OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32.  overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.","dates":{"published":"2026-03-03T22:42:49.086Z","modified":"2026-09-09T12:04:51.973Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.4,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.4,"severity":"high","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.4,"severity":"high","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · 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This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"academysoftwarefoundation","product":"openexr","name":"openexr","label":"openexr","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.3.0, < 3.2.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.3.0, < 3.3.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 3.4.0, < 3.4.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.3.0, < 3.2.6 | ≥ 3.3.0, < 3.3.8 | ≥ 3.4.0, < 3.4.6","eol":null,"hubHref":"/vendor/academysoftwarefoundation/openexr"},{"vendor":"debian","product":"openexr","name":"openexr","label":"openexr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/openexr","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 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