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  5. CVE-2025-64183

CVE-2025-64183: OpenEXR has use after free in PyObject_StealAttrString

April 6, 2026

There is a use-after-free in PyObject_StealAttrString of pyOpenEXR_old.cpp.

This bug was found with ZeroPath.

References

  • github.com/AcademySoftwareFoundation/openexr
  • github.com/AcademySoftwareFoundation/openexr/blob/b3a19903db0672c63055023aa788e592b16ec3c5/src/wrappers/python/PyOpenEXR_old.cpp
  • github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-57cw-j6vp-2p9m
  • github.com/advisories/GHSA-57cw-j6vp-2p9m
  • nvd.nist.gov/vuln/detail/CVE-2025-64183

Code Behaviors & Features

Detect and mitigate CVE-2025-64183 with GitLab Dependency Scanning

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Affected versions

All versions starting from 3.2.0 before 3.2.5, all versions starting from 3.3.0 before 3.3.6, all versions starting from 3.4.0 before 3.4.3

Fixed versions

  • 3.2.5
  • 3.3.6
  • 3.4.3

Solution

Upgrade to versions 3.2.5, 3.3.6, 3.4.3 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-416: Use After Free

Source file

pypi/OpenEXR/CVE-2025-64183.yml

Spotted a mistake? Edit the file on GitLab.

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