OpenEXR: Heap OOB read in SampleCountChannel row when using nonzero dataWindow

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59981
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 20:16:58 UTC
Updated2026-08-28 23:17:11 UTC
DescriptionOpenEXR is the reference implementation and specification for the EXR image file format, widely used in the motion picture industry. In versions through 3.2.10, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, the OpenEXRUtil library returns an out-of-bounds pointer from the SampleCountChannel::row() API when a deep image has a non-zero dataWindow origin. The row() accessor is documented as 0-based and computes its address from an internal base that is offset for absolute pixel coordinates, so the two coordinate models conflict whenever dataWindow.min is non-zero. For a deep image whose data window has a large negative vertical origin, row(0) points far outside the allocated sample-count buffer. An application that opens an attacker-controlled deep EXR file and accesses sample counts through row() performs an out-of-bounds read, which can crash the process or, under a controlled heap layout, return adjacent heap memory as sample-count values. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

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

EPSS: 0.002520000 probability, percentile 0.164230000 (date 2026-08-28)

Problem Types: CWE-125 | CWE-125 CWE-125: Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA AcademySoftwareFoundation Openexr affected < 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/commit/55b7958ecb5ac32c427f... [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m7... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/AcademySoftwareFoundation/openexr/commit/37f03b6ed90f3dd9910f... [email protected] github.com
github.com/AcademySoftwareFoundation/openexr/commit/aef02224ba282a802de6... [email protected] github.com
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