OpenEXR: integer overflow to OOB write in uncompress_b44_impl()_CVE-2026-34544

{
    "lastseen": "",
    "description": "OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.",
    "published": "2026-04-01T20:55:30.493Z",
    "modified": "2026-04-02T18:02:56.427Z",
    "type": "cve",
    "title": "OpenEXR: integer overflow to OOB write in uncompress_b44_impl()",
    "source": "GitHub_M",
    "references": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h762-rhv3-h25v\nhttps://github.com/AcademySoftwareFoundation/openexr/commit/35e7aa35e22c1975606be86e859f31cc1fc598ee\nhttps://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8",
    "id": "CVE-2026-34544",
    "bulletinFamily": "",
    "cwe": [
        "CWE-190",
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "AcademySoftwareFoundation openexr >= 3.4.0, < 3.4.8",
    "sourceHref": "",
    "cvss": {
        "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",
        "version": "4.0"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "openexr",
    "version": ">= 3.4.0, < 3.4.8",
    "vendor": "AcademySoftwareFoundation",
    "ai_description": "",
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    "ai_score": 0
}