Vulnerability Description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions 3.3.0 through 3.3.12 and 3.4.0 through 3.4.13 are vulnerable to a heap out-of-bounds write when exrmetrics reads a crafted deep scanline EXR. This occurs with pixel conversion options such as --pixelmode float or --bench because DeepSlice requests FLOAT output while the backing sample buffers are allocated using the input HALF element size. The issue is fixed in versions 3.3.13 and 3.4.14.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/AcademySoftwareFoundation/openexr/commit/46e70220dc91dbc1341f
- https://github.com/AcademySoftwareFoundation/openexr/commit/7e772dd704b9b5d6dc25
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-6j
FAQ
What is CVE-2026-59187?
CVE-2026-59187 is a vulnerability with a CVSS score of 7.1 (HIGH). OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions 3.3.0 through 3.3.12 and 3.4.0 through 3.4.13 are vulne...
How severe is CVE-2026-59187?
CVE-2026-59187 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-59187?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.