OpenEXR: Scratch buffer overflow decoding B44-compressed InputFile on ILP32

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59984
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 18:17:57 UTC
Updated2026-08-25 19:16:51 UTC
DescriptionOpenEXR 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-787 | CWE-787 CWE-787: Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNADECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA AcademySoftwareFoundation Openexr affected >= 3.1.0, < 3.2.11 Not specified
CNA AcademySoftwareFoundation Openexr affected >= 3.3.0, < 3.3.13 Not specified
CNA AcademySoftwareFoundation Openexr affected >= 3.4.0, < 3.4.14 Not specified

References

ReferenceSourceLinkTags
github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.13 [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.11 [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.14 [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-92... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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