CVE-2026-44663

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{"affected": [{"affectedData": [{"product": "openexr", "vendor": "AcademySoftwareFoundation", "versions": [{"status": "affected", "version": ">= 3.4.0, < 3.4.11"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*", "matchCriteriaId": "CE4AA511-B965-4D8D-A4A6-384B7E6D4F85", "versionEndExcluding": "3.4.12", "versionStartIncluding": "3.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, an integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp leads to a heap-buffer overflow when decoding a crafted HTJ2K-compressed EXR file. decode->channels[i].width (int32_t) is multiplied by bytes_per_element in 32-bit signed arithmetic. With large widths (e.g., >= 536870912 for FLOAT data), this overflows, producing a corrupted offset that is later used for pointer arithmetic and can cause a heap out-of-bounds write. The same unchecked multiplication pattern appears in two other HTJ2K paths (bytes-per-line accumulation and pixel-line pointer advancement). As with related CVE-2026-34378 through CVE-2026-34589 fixes in other codecs, validating only after the multiplication is too late because the value may already be overflowed. This issue has been fixed in version 3.4.12."}, {"lang": "es", "value": "OpenEXR es la implementaci\u00f3n de referencia y especificaci\u00f3n para el formato de imagen EXR, ampliamente utilizado en la industria cinematogr\u00e1fica. En las versiones 3.4.0 a 3.4.11, un desbordamiento de entero en ht_undo_impl() en src/lib/OpenEXRCore/internal_ht.cpp conduce a un desbordamiento de b\u00fafer de pila al decodificar un archivo EXR comprimido con HTJ2K manipulado. decode -> channels[i].width (int32_t) se multiplica por bytes_per_element en aritm\u00e9tica con signo de 32 bits. Con anchos grandes (por ejemplo, >= 536870912 para datos FLOAT), esto se desborda, produciendo un desplazamiento corrupto que se utiliza posteriormente para aritm\u00e9tica de punteros y puede causar una escritura fuera de l\u00edmites en la pila. El mismo patr\u00f3n de multiplicaci\u00f3n sin verificar aparece en otras dos rutas HTJ2K (acumulaci\u00f3n de bytes por l\u00ednea y avance del puntero de l\u00ednea de p\u00edxeles). Al igual que con las correcciones relacionadas CVE-2026-34378 a CVE-2026-34589 en otros c\u00f3decs, validar solo despu\u00e9s de la multiplicaci\u00f3n es demasiado tarde porque el valor ya podr\u00eda haberse desbordado. Este problema ha sido corregido en la versi\u00f3n 3.4.12."}], "id": "CVE-2026-44663", "lastModified": "2026-10-26T11:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44663", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-22T15:47:13.159306Z", "version": "2.0.3"}}]}, "published": "2026-06-18T21:16:28.767", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "OpenEXR: OpenEXR: Denial of Service via crafted HTJ2K-compressed EXR file", "id": "2490585", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2490585"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["A security flaw has been identified in OpenEXR, a widely used image format library, which may impact applications processing certain high-resolution image files."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, avoid processing untrusted HTJ2K-compressed EXR files. Restricting the handling of such files to trusted sources can prevent exploitation of this vulnerability in applications that utilize the OpenEXR library."}, "name": "CVE-2026-44663", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "openexr", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "OpenEXR", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "OpenEXR", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "OpenEXR", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "openexr", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-18T20:20:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-44663\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-44663\nhttps://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.12\nhttps://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-777r-f9x8-7r84"], "statement": "This Moderate impact flaw in OpenEXR, present in Red Hat products, arises from an integer overflow when decoding maliciously crafted HTJ2K-compressed EXR files. Successful exploitation requires user interaction to open a specially crafted file, leading to a heap-buffer overflow that can result in denial of service and potential data integrity corruption.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.4.0,3.4.11)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "openexr", "source": "cna", "vendor": "AcademySoftwareFoundation"}, "product": "openexr", "vendor": "academysoftwarefoundation"}], "created": "2026-06-18T22:00:12.466409+00:00", "updated": "2026-06-18T22:15:04.039079+00:00", "vendors": ["academysoftwarefoundation", "academysoftwarefoundation$PRODUCT$openexr"]}