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OpenEXR EUVDEUVD-2026-65744

| CVE-2026-68515 HIGH
Heap-based Buffer Overflow (CWE-122)
2026-08-25 GitHub_M
Buffer Overflow Heap Overflow Openexr Academysoftwarefoundation
7.1
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

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

Local CLI tool invocable without elevated privileges (PR:N, AV:L); user must actively run exrmultiview (UI:R); heap write yields no confidentiality impact but high integrity and availability impact.

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

Lifecycle Timeline

4
Patch available
Aug 25, 2026 - 21:04 EUVD
Source Code Evidence Fetched
Aug 25, 2026 - 20:21 vuln.today
Analysis Generated
Aug 25, 2026 - 20:21 vuln.today
CVE Published
Aug 25, 2026 - 19:34 cve.org
HIGH 7.1

DescriptionCVE.org

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13, exrmultiview can write past a heap allocation when it combines two attacker-supplied, individually valid scanline EXR files whose union dataWindow is not aligned to one view's channel subsampling. The utility allocates sampled channel storage using a truncated union_width / xSampling, then reads the sampled input through a Slice based on the misaligned union window, producing a heap out-of-bounds write. The trigger is normal public-tool processing, such as exrmultiview left A.exr right B.exr out.exr with crafted but valid inputs, so this is not solely an API or caller-precondition issue. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

AnalysisAI

Heap out-of-bounds write in OpenEXR's exrmultiview utility allows an attacker who can supply crafted EXR files to corrupt heap memory when the tool combines two individually valid scanline EXR files whose union dataWindow is misaligned to one view's channel subsampling. Affected are OpenEXR versions across three maintained branches (pre-3.2.11, 3.3.0-3.3.12, and 3.4.0-3.4.13), all fixed in their respective patch releases. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires that a user or automated process invoke the exrmultiview utility on two attacker-supplied EXR files where at least one file contains channels with xSampling or ySampling values other than 1, and the resulting union dataWindow is misaligned to that subsampling. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.1 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H) accurately reflects the attack surface: local execution with required user interaction, no confidentiality impact, but high integrity and availability impact from heap corruption. … 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 Upgrade to OpenEXR 3.2.11, 3.3.13, or 3.4.14 according to your installed branch; these are the vendor-confirmed fixed releases per the GitHub Security Advisory at https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-gjf7-wjjw-xq56, with corresponding fixes in commits 77ee19c021398b1c56f32c3af8347e365dbd4f33, c644ac2dfeac82939c81a8551d6f4b7859f63add, and e2300a3d54a93d20a36a86b82f3a506c4c91476f. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all production and development systems running OpenEXR utilities, particularly exrmultiview, and document current installed versions across your VFX pipeline infrastructure. …

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

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EUVD-2026-65744 vulnerability details – vuln.today
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