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CVE-2026-34589

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. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.

Severity
HIGH
CVSS score
8.4 (v4.0)
Vulnerability status
Modified
Source identifier
[email protected]
Published
2026-04-06 16:16:36.040000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON 
{
  "id": "CVE-2026-34589",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-06T16:16:36.040",
  "lastModified": "2026-10-26T22:10:00.163",
  "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. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9."
    },
    {
      "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. Desde la versión 3.2.0 hasta antes de las versiones 3.2.7, 3.3.9 y 3.4.9, el decodificador con pérdida DWA construye punteros de bloque temporales por componente utilizando aritmética de 32 bits con signo. Para un ancho suficientemente grande, el cálculo se desborda y los posteriores almacenamientos del decodificador operan sobre un puntero envuelto fuera del almacenamiento de respaldo rowBlock asignado. Esta vulnerabilidad se corrige en las versiones 3.2.7, 3.3.9 y 3.4.9."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "AcademySoftwareFoundation",
          "product": "openexr",
          "versions": [
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              "version": ">= 3.2.0, < 3.2.7",
              "status": "affected"
            },
            {
              "version": ">= 3.3.0, < 3.3.9",
              "status": "affected"
            },
            {
              "version": ">= 3.4.0, < 3.4.9",
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            }
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    },
    {
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      "affectedData": [
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          "product": "Red Hat Enterprise Linux 10",
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          "packageName": "OpenEXR",
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          "packageName": "OpenEXR",
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          "packageName": "OpenEXR",
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  "metrics": {
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          "baseScore": 8.4,
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          "attackVector": "LOCAL",
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          "attackRequirements": "NONE",
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          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "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",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "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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    ],
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    "ssvcV203": [
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        "ssvcData": {
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          "id": "CVE-2026-34589",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  "weaknesses": [
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  "configurations": [
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          "negate": false,
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      "source": "[email protected]",
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}