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OpenEXR EUVDEUVD-2026-65183

| CVE-2026-55059 MEDIUM
Out-of-bounds Write (CWE-787)
2026-08-25 GitHub_M
Buffer Overflow Memory Corruption Openexr Academysoftwarefoundation
6.1
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.1 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
vuln.today AI
6.1 MEDIUM

File must be locally opened or processed (AV:L, UI:R); no privileges required to supply crafted input (PR:N); heap corruption causes crashes (A:H) with limited integrity side-effects and no confidentiality exposure.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

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

Lifecycle Timeline

2
Patch available
Aug 25, 2026 - 02:01 EUVD
Analysis Generated
Aug 25, 2026 - 00:43 vuln.today

DescriptionCVE.org

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions prior to 3.2.10, 3.3.12 and 3.4.13 contain a heap out-of-bounds write in Imf_4_0::SampleCountChannel::set(int r, unsigned int newNumSamples[]). The row-based sample-count setter computes the target Y coordinate with dataWindow.min.x instead of dataWindow.min.y. For a valid deep image data window where min.x != min.y, a valid row index can be translated into an invalid Y coordinate, causing writes before the allocated _numSamples buffer. The vulnerability is reachable through the public OpenEXRUtil DeepImage API and can lead to heap corruption and process crashes. This issue has been fixed in versions 3.2.10, 3.3.12 and 3.4.13.

AnalysisAI

Heap out-of-bounds write in OpenEXR's DeepImage API affects all versions prior to 3.2.10, 3.3.12, and 3.4.13, exploitable by processing a crafted deep image EXR file. A coordinate axis confusion bug in Imf_4_0::SampleCountChannel::set() uses dataWindow.min.x instead of dataWindow.min.y when computing a target Y coordinate, causing memory writes before the allocated _numSamples heap buffer when min.x ≠ min.y. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the target application process a deep image EXR file - one ingested through the OpenEXRUtil DeepImage API, not standard flat or scanline EXR images. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 6.1 Medium score reflects AV:L (local file processing), UI:R (a user or process must open the file), no confidentiality impact, Low integrity impact, and High availability impact - a profile consistent with a file-parsing crash/corruption class of vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patches are available: upgrade to OpenEXR 3.2.10, 3.3.12, or 3.4.13 depending on the active release branch in use, as documented in the upstream GitHub Security Advisory at https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-54cp-3rq6-7mq8. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-787 – Out-of-bounds Write

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Desktop Applications 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed
SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise Server for SAP applications 16.0 Fixed
openSUSE Leap 16.0 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Affected

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EUVD-2026-65183 vulnerability details – vuln.today
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