CVE-2026-59984
OpenEXR: Scratch buffer overflow decoding B44-compressed InputFile on ILP32
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to an out-of-bounds write. When a crafted B44-compressed scanline EXR causes the logical scratch size to truncate before allocation and uncompress_b44_impl() writes using the attacker-controlled channel width, allowing denial of service and memory corruption. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
| CWE | CWE-787 |
| Vendor | academysoftwarefoundation |
| Product | openexr |
| Published | Aug 25, 2026 |
| Last Updated | Aug 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
AcademySoftwareFoundation / openexr
>= 3.1.0, < 3.2.11 >= 3.3.0, < 3.3.13 >= 3.4.0, < 3.4.14
References
github.com: https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-92pq-9qv4-g68q github.com: https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.11 github.com: https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.13 github.com: https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.14