CVE-2025-64181OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry.
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OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-457
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openexr openexr openexr:openexr | from 3.3.0 before 3.3.6; from 3.4.0 before 3.4.3 | NVD |
References
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-3h9h-qfvw-98hqexploit, vendor-advisory
- https://github.com/user-attachments/files/23024726/archive0.zipbroken-link
- https://github.com/user-attachments/files/23024736/archive1.zipbroken-link
- https://github.com/user-attachments/files/23024740/archive2.zipbroken-link
- https://github.com/user-attachments/files/23024744/archive3.zipbroken-link
- https://github.com/user-attachments/files/23024746/archive4.zipbroken-link
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.