{"cve":"CVE-2025-64183","nvd":{"published":"2025-11-10T22:15:37.323","modified":"2026-06-17T09:53:58.397","status":"Analyzed","description":"OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, there is a use-after-free in PyObject_StealAttrString of pyOpenEXR_old.cpp. The legacy adapter defines PyObject_StealAttrString that calls PyObject_GetAttrString to obtain a new reference, immediately decrefs it, and returns the pointer. Callers then pass this dangling pointer to APIs like PyLong_AsLong/PyFloat_AsDouble, resulting in a use-after-free. This is invoked in multiple places (e.g., reading PixelType.v, Box2i, V2f, etc.) Versions 3.2.5, 3.3.6, and 3.4.3 fix the issue.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P","score":5.5},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-416"],"references":["https://github.com/AcademySoftwareFoundation/openexr/blob/b3a19903db0672c63055023aa788e592b16ec3c5/src/wrappers/python/PyOpenEXR_old.cpp#L109-L115","https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-57cw-j6vp-2p9m","https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-57cw-j6vp-2p9m"],"products":["openexr:openexr"],"source":"nvd","synced_at":"2026-10-19T22:14:53.307938015+00:00"},"epss":{"cve":"CVE-2025-64183","score":0.00322,"percentile":0.25246,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-57cw-j6vp-2p9m","url":"https://osv.dev/vulnerability/GHSA-57cw-j6vp-2p9m","summary":"OpenEXR has use after free in PyObject_StealAttrString","modified":"2026-07-13T16:42:51.626377570Z","packages":[{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.2.0 <3.2.5"],"fixed":["3.2.5"]},{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.3.0 <3.3.6"],"fixed":["3.3.6"]},{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.4.0 <3.4.3"],"fixed":["3.4.3"]}]},{"id":"PYSEC-2026-2844","url":"https://osv.dev/vulnerability/PYSEC-2026-2844","summary":"OpenEXR has use after free in PyObject_StealAttrString","modified":"2026-07-13T16:32:32.975861589Z","packages":[{"ecosystem":"PyPI","name":"openexr","purl":"pkg:pypi/openexr","ranges":[">=3.2.0 <3.2.5",">=3.3.0 <3.3.6",">=3.4.0 <3.4.3"],"fixed":["3.2.5","3.3.6","3.4.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}