Vulnerability Details CVE-2026-27622
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.1%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2026-27622
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cpe:2.3:a:openexr:openexr:-
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cpe:2.3:a:openexr:openexr:1.0
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cpe:2.3:a:openexr:openexr:1.0.1
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cpe:2.3:a:openexr:openexr:1.0.2
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cpe:2.3:a:openexr:openexr:1.0.3
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cpe:2.3:a:openexr:openexr:1.0.4
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cpe:2.3:a:openexr:openexr:1.0.5
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cpe:2.3:a:openexr:openexr:1.0.6
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cpe:2.3:a:openexr:openexr:1.0.7
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cpe:2.3:a:openexr:openexr:1.1.0
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cpe:2.3:a:openexr:openexr:1.1.1
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cpe:2.3:a:openexr:openexr:1.2.1
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cpe:2.3:a:openexr:openexr:1.2.2
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cpe:2.3:a:openexr:openexr:1.3.0
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cpe:2.3:a:openexr:openexr:1.3.1
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cpe:2.3:a:openexr:openexr:1.3.2
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cpe:2.3:a:openexr:openexr:1.4.0
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cpe:2.3:a:openexr:openexr:1.5.0
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cpe:2.3:a:openexr:openexr:1.6.0
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cpe:2.3:a:openexr:openexr:1.6.1
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cpe:2.3:a:openexr:openexr:1.7.0
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cpe:2.3:a:openexr:openexr:1.7.1
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cpe:2.3:a:openexr:openexr:2.0.0
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cpe:2.3:a:openexr:openexr:2.0.1
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cpe:2.3:a:openexr:openexr:2.1.0
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cpe:2.3:a:openexr:openexr:2.2.0
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cpe:2.3:a:openexr:openexr:2.2.1
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cpe:2.3:a:openexr:openexr:2.2.2
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cpe:2.3:a:openexr:openexr:2.3.0
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cpe:2.3:a:openexr:openexr:2.4.0
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cpe:2.3:a:openexr:openexr:2.4.1
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cpe:2.3:a:openexr:openexr:2.4.2
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cpe:2.3:a:openexr:openexr:2.4.3
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cpe:2.3:a:openexr:openexr:2.5.0
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cpe:2.3:a:openexr:openexr:2.5.1
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cpe:2.3:a:openexr:openexr:2.5.10
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cpe:2.3:a:openexr:openexr:2.5.2
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cpe:2.3:a:openexr:openexr:2.5.3
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cpe:2.3:a:openexr:openexr:2.5.4
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cpe:2.3:a:openexr:openexr:2.5.5
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cpe:2.3:a:openexr:openexr:2.5.6
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cpe:2.3:a:openexr:openexr:2.5.7
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cpe:2.3:a:openexr:openexr:2.5.8
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cpe:2.3:a:openexr:openexr:2.5.9
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cpe:2.3:a:openexr:openexr:3.0.0
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cpe:2.3:a:openexr:openexr:3.0.1
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cpe:2.3:a:openexr:openexr:3.0.2
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cpe:2.3:a:openexr:openexr:3.0.3
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cpe:2.3:a:openexr:openexr:3.0.4
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cpe:2.3:a:openexr:openexr:3.0.5
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cpe:2.3:a:openexr:openexr:3.1.0
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cpe:2.3:a:openexr:openexr:3.1.1
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cpe:2.3:a:openexr:openexr:3.1.10
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cpe:2.3:a:openexr:openexr:3.1.11
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cpe:2.3:a:openexr:openexr:3.1.2
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cpe:2.3:a:openexr:openexr:3.1.3
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cpe:2.3:a:openexr:openexr:3.1.4
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cpe:2.3:a:openexr:openexr:3.1.5
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cpe:2.3:a:openexr:openexr:3.1.6
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cpe:2.3:a:openexr:openexr:3.1.7
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cpe:2.3:a:openexr:openexr:3.1.8
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cpe:2.3:a:openexr:openexr:3.1.9
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cpe:2.3:a:openexr:openexr:3.2.0
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cpe:2.3:a:openexr:openexr:3.2.1
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cpe:2.3:a:openexr:openexr:3.2.2
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cpe:2.3:a:openexr:openexr:3.2.3
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cpe:2.3:a:openexr:openexr:3.2.4
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cpe:2.3:a:openexr:openexr:3.2.5
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cpe:2.3:a:openexr:openexr:3.3.0
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cpe:2.3:a:openexr:openexr:3.3.1
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cpe:2.3:a:openexr:openexr:3.3.2
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cpe:2.3:a:openexr:openexr:3.3.3
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cpe:2.3:a:openexr:openexr:3.3.4
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cpe:2.3:a:openexr:openexr:3.3.5
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cpe:2.3:a:openexr:openexr:3.3.6
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cpe:2.3:a:openexr:openexr:3.4.0
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cpe:2.3:a:openexr:openexr:3.4.1
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cpe:2.3:a:openexr:openexr:3.4.2
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cpe:2.3:a:openexr:openexr:3.4.3
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cpe:2.3:a:openexr:openexr:3.4.4