OpenEXR: Signed Integer Overflow Leading to Out-of-Bounds Memory Access in Deep Tile Decoding

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59183
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 01:16:37 UTC
Updated2026-08-25 01:16:37 UTC
DescriptionOpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.1.0 through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, an int32_t multiplication in OpenEXRCore's unpack_sample_table() can overflow while decoding a crafted deep tiled EXR file, producing an invalid pointer that leads to a read from an unmapped memory address and a crash. Because the overflow occurs in the standard decoding path (exr_decoding_run), any application that decodes deep tiled EXR files is affected. 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-190 | CWE-190 CWE-190: Integer Overflow or Wraparound

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/security/advisories/GHSA-rq... [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/commit/a6cf183725b5665ac3fd... [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/commit/e2adb5be3bbc3a1f82f2... [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/commit/5e55a64ad1f119a81665... [email protected] github.com
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