Vulnerability Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B44 or B44A EXR file can cause an out-of-bounds write in any application that decodes it via exr_decoding_run(). Consequences range from immediate crash (most likely) to corruption of adjacent heap allocations (layout-dependent). This issue has been patched in version 3.4.8.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openexr | Openexr | >= 3.2.0, < 3.2.7 |
Related Weaknesses (CWE)
References
- https://github.com/AcademySoftwareFoundation/openexr/commit/35e7aa35e22c1975606bPatch
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.8ProductRelease Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-h7ExploitVendor Advisory
FAQ
What is CVE-2026-34544?
CVE-2026-34544 is a vulnerability with a CVSS score of 7.3 (HIGH). OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, a crafted B...
How severe is CVE-2026-34544?
CVE-2026-34544 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34544?
Check the references section above for vendor advisories and patch information. Affected products include: Openexr Openexr.