{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55059", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T14:33:35.709Z", "datePublished": "2026-08-25T00:16:01.747Z", "dateUpdated": "2026-08-27T14:30:57.043Z"}, "containers": {"cna": {"title": "OpenEXR: OpenEXRUtil SampleCountChannel row setter heap has an out-of-bounds write vulnerability", "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8"}], "affected": [{"vendor": "AcademySoftwareFoundation", "product": "openexr", "versions": [{"version": "< 3.2.10", "status": "affected"}, {"version": ">= 3.3.0, < 3.3.12", "status": "affected"}, {"version": ">= 3.4.0, < 3.4.13", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-25T00:16:01.747Z"}, "descriptions": [{"lang": "en", "value": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions prior to 3.2.10, 3.3.12 and 3.4.13 contain a heap out-of-bounds write in Imf_4_0::SampleCountChannel::set(int r, unsigned int newNumSamples[]). The row-based sample-count setter computes the target Y coordinate with dataWindow.min.x instead of dataWindow.min.y. For a valid deep image data window where min.x != min.y, a valid row index can be translated into an invalid Y coordinate, causing writes before the allocated _numSamples buffer. The vulnerability is reachable through the public OpenEXRUtil DeepImage API and can lead to heap corruption and process crashes. This issue has been fixed in versions 3.2.10, 3.3.12 and 3.4.13."}], "source": {"advisory": "GHSA-54cp-3rq6-7mq8", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-27T14:30:07.974815Z", "id": "CVE-2026-55059", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-27T14:30:57.043Z"}}]}}

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{"affected": [{"affectedData": [{"product": "openexr", "vendor": "AcademySoftwareFoundation", "versions": [{"status": "affected", "version": "< 3.2.10"}, {"status": "affected", "version": ">= 3.3.0, < 3.3.12"}, {"status": "affected", "version": ">= 3.4.0, < 3.4.13"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions prior to 3.2.10, 3.3.12 and 3.4.13 contain a heap out-of-bounds write in Imf_4_0::SampleCountChannel::set(int r, unsigned int newNumSamples[]). The row-based sample-count setter computes the target Y coordinate with dataWindow.min.x instead of dataWindow.min.y. For a valid deep image data window where min.x != min.y, a valid row index can be translated into an invalid Y coordinate, causing writes before the allocated _numSamples buffer. The vulnerability is reachable through the public OpenEXRUtil DeepImage API and can lead to heap corruption and process crashes. This issue has been fixed in versions 3.2.10, 3.3.12 and 3.4.13."}], "id": "CVE-2026-55059", "lastModified": "2026-08-27T17:18:48.047", "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": "[email protected]", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55059", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-27T14:30:07.974815Z", "version": "2.0.3"}}]}, "published": "2026-08-25T01:16:36.667", "references": [{"source": "[email protected]", "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "[email protected]", "type": "Secondary"}]}

{"bugzilla": {"description": "OpenEXR: OpenEXR: Heap out-of-bounds write leads to denial of service", "id": "2523179", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523179"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-124", "details": ["A flaw was found in OpenEXR, a widely used library for the EXR image format. A user processing a specially crafted image file could trigger a heap out-of-bounds write vulnerability in the `SampleCountChannel::set` function. This occurs due to an incorrect computation of the target Y coordinate, leading to writes before an allocated buffer. Successful exploitation can result in heap corruption and process crashes, potentially causing a denial of service."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-55059", "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": "Not affected", "impact": "low", "package_name": "OpenEXR", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "impact": "low", "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": "2026-08-25T00:16:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-55059\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-55059\nhttps://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8"], "statement": "This flaw affects the SampleCountChannel component of OpenEXR, which was introduced in version 2.0. Red Hat Enterprise Linux 6 and 7 ship OpenEXR 1.x, which does not include this component and is not affected. Other Red Hat products shipping OpenEXR 2.x and later are affected.", "threat_severity": "Moderate"}

{"created": "2026-08-25T01:30:18.050819+00:00", "updated": "2026-08-26T04:15:04.261113+00:00", "vendors": []}