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CVE-2026-40244

Full vulnerability record from the local CVENow database.

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.

Severity
HIGH
CVSS score
8.4 (v4.0)
Vulnerability status
Modified
Source identifier
[email protected]
Published
2026-04-21 02:16:08.060000
Last modified
2026-10-26 21:10:00.170000
View original CVE JSON 
{
  "id": "CVE-2026-40244",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-21T02:16:08.060",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Modified",
  "cveTags": [],
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      "value": "OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`."
    },
    {
      "lang": "es",
      "value": "OpenEXR proporciona la especificación y la implementación de referencia del formato de archivo EXR, un formato de almacenamiento de imágenes para la industria cinematográfica. En las versiones 3.4.0 a 3.4.9, 3.3.0 a 3.3.9, y 3.2.0 a 3.2.7, internal_dwa_compressor.h:1722 realiza curc -> width * curc -> height en aritmética int32 sin una conversión de tipo (size_t). Este es el mismo patrón de desbordamiento corregido en otras ubicaciones por el reciente lote de CVE-2026-34589, pero esta línea se pasó por alto. Las versiones 3.4.10, 3.3.10, y 3.2.8 contienen una corrección que aborda internal_dwa_compressor.h:1722."
    }
  ],
  "affected": [
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      "affectedData": [
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              "status": "affected"
            },
            {
              "version": ">= 3.3.0, < 3.3.10",
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            {
              "version": ">= 3.4.0, < 3.4.10",
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  "metrics": {
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        "cvssData": {
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          "subConfidentialityImpact": "NONE",
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          "subAvailabilityImpact": "NONE",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
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    ],
    "cvssMetricV31": [
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    "ssvcV203": [
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          "role": "CISA Coordinator",
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  "weaknesses": [
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      "type": "Secondary",
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}