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OpenEXR EUVDEUVD-2026-65691

| CVE-2026-59983 MEDIUM
Out-of-bounds Read (CWE-125)
2026-08-25 GitHub_M
Buffer Overflow Denial Of Service Information Disclosure Openexr Academysoftwarefoundation
5.5
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

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

Local vector because victim must open a crafted file; no privileges required at library level; user interaction required; impact is availability-only crash with no confirmed confidentiality or integrity effect.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
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
None
Availability
High

Lifecycle Timeline

3
Patch available
Aug 25, 2026 - 20:06 EUVD
Source Code Evidence Fetched
Aug 25, 2026 - 18:54 vuln.today
Analysis Generated
Aug 25, 2026 - 18:54 vuln.today

DescriptionCVE.org

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions before 3.2.11, 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 read. The vulnerability is reached when a crafted uncompressed deep-tile EXR causes the sample-count table size calculation in OpenEXRCore decoding.c to wrap before unpack_sample_table() iterates over the full attacker-controlled tile dimensions, allowing denial of service. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.

AnalysisAI

Out-of-bounds read in OpenEXR's ILP32 builds enables denial of service via crafted uncompressed deep-tile EXR files across three active release branches (before 3.2.11, 3.3.0-3.3.12, and 3.4.0-3.4.13). The root cause is a 32-bit integer overflow in OpenEXRCore's sample-count table size calculation that causes unpack_sample_table() to iterate beyond an undersized allocation. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires all three of the following conditions simultaneously: (1) the target must be running an ILP32 (32-bit ABI) build of OpenEXR - any 64-bit deployment where size_t is 64-bit is completely unaffected because the arithmetic overflow cannot occur; (2) the application must process uncompressed deep-tile EXR files, as the vulnerable code path in update_pack_unpack_ptrs() and unpack_sample_table() is only reachable for this specific tile encoding; (3) user interaction is required - the victim must open or trigger processing of the attacker-supplied EXR file (CVSS UI:R). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 5.5 (Medium) is consistent with the narrow exploitation conditions: AV:L and UI:R together require a victim on an ILP32 system to open a crafted file, ruling out unauthenticated remote exploitation and automated scanning. … 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 3.2.11, 3.3.13, or 3.4.14 depending on the active branch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-125 – Out-of-bounds Read

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Server for SAP applications 16.0 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 12 Affected

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EUVD-2026-65691 vulnerability details – vuln.today
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