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OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3…

cve CVE-2026-63419 1 source, 1 claim · Watch

NVD writes:
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corrupt… the claim
Severity
HIGH NVD
CVSS
7.8 NVD
Vendor
AcademySoftwareFoundation NVD
Product
OpenImageIO NVD
CWE
CWE-787 NVD

How far exploitation has got

  1. No public code known
  2. Proof of concept
  3. Proof of concept, verified
  4. A Metasploit module
  5. Exploited in the wild
  6. Used in ransomware campaigns

Timeline

2026-09-18first spoke of it: OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::read_native_tile(), ImageSpec::tile_bytes(true), m_header.pixel_bytes(), ZBUFFER, and m_buf, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.NVD

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::read_native_tile(), ImageSpec::tile_bytes(true), m_header.pixel_bytes(), ZBUFFER, and m_buf, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

What it is to other things

affectsopenimageio/openimageio
NVD
made_byopenimageio
NVD

In words only, so not counted until a person confirms one:

made_byacademysoftwarefoundation
NVD says “AcademySoftwareFoundation”
affectsacademysoftwarefoundation/openimageio
NVD says “AcademySoftwareFoundation · OpenImageIO”
Every value, with what each source said and its receipt
PropertySourceSaidMeans here
Automatable
automatable
NVDno
At least one of those steps needs a person.
receipt
Source
NVD
Its words
no
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].automatable
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCno
2026-09-29 09:45 UTC—
What the source handed over
{
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    "affected": [
      {
        "affectedData": [
          {
            "product": "OpenImageIO",
            "vendor": "AcademySoftwareFoundation",
            "versions": [
              {
                "status": "affected",
                "version": "< 3.0.21.0"
              },
              {
                "status": "affected",
                "version": ">= 3.1.0.0, < 3.1.16.0"
              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
            ]
          }
        ],
        "source": "security-advisories@github.com"
      }
    ],
    "configurations": [
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                "versionEndExcluding": "3.0.21.0",
                "vulnerable": true
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                "versionEndIncluding": "3.1.16.0",
                "versionStartIncluding": "3.1.0.0",
                "vulnerable": true
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    "published": "2026-09-18T16:17:07.687",
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        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"
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        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
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    "sourceIdentifier": "security-advisories@github.com",
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}
—
CVSS
cvss
NVD7.8
receipt
Source
NVD
Its words
7.8
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
{
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      {
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          {
            "product": "OpenImageIO",
            "vendor": "AcademySoftwareFoundation",
            "versions": [
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              },
              {
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              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
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—
CVSS vector
cvss_vector
NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
receipt
Source
NVD
Its words
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2026-09-29 09:45 UTC—
What the source handed over
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      }
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    "sourceIdentifier": "security-advisories@github.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-787"
          }
        ],
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  }
}
—
CWE
cwe
NVDCWE-787
receipt
Source
NVD
Its words
CWE-787
Read by
field:cve.weaknesses[].description[].value
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCWE-787
2026-09-29 09:45 UTC—
What the source handed over
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  "cve": {
    "affected": [
      {
        "affectedData": [
          {
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            "vendor": "AcademySoftwareFoundation",
            "versions": [
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              },
              {
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              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
            ]
          }
        ],
        "source": "security-advisories@github.com"
      }
    ],
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      },
      {
        "source": "security-advisories@github.com",
        "tags": [
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        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
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          "Vendor Advisory"
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      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      }
    ],
    "sourceIdentifier": "security-advisories@github.com",
    "vulnStatus": "Analyzed",
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          }
        ],
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  }
}
—
Exploitation
exploitation
NVDpoc
A public proof of concept exists, or exploitation is trivial.
receipt
Source
NVD
Its words
poc
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].exploitation
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCpoc
2026-09-29 09:45 UTC—
What the source handed over
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      {
        "affectedData": [
          {
            "product": "OpenImageIO",
            "vendor": "AcademySoftwareFoundation",
            "versions": [
              {
                "status": "affected",
                "version": "< 3.0.21.0"
              },
              {
                "status": "affected",
                "version": ">= 3.1.0.0, < 3.1.16.0"
              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
            ]
          }
        ],
        "source": "security-advisories@github.com"
      }
    ],
    "configurations": [
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                "versionEndExcluding": "3.0.21.0",
                "vulnerable": true
              },
              {
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                "versionEndIncluding": "3.1.16.0",
                "versionStartIncluding": "3.1.0.0",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:openimageio:openimageio:3.2.0.0:dev:*:*:*:*:*:*",
                "matchCriteriaId": "F43FE0AC-4CFC-485D-8370-37336EB2CEA0",
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    ],
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      }
    ],
    "id": "CVE-2026-63419",
    "lastModified": "2026-09-29T18:56:40.093",
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "security-advisories@github.com",
          "type": "Secondary"
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      ],
      "ssvcV203": [
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            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-18T17:33:32.010538Z",
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    },
    "published": "2026-09-18T16:17:07.687",
    "references": [
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        "source": "security-advisories@github.com",
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      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Issue Tracking",
          "Patch"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5268"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      }
    ],
    "sourceIdentifier": "security-advisories@github.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
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          }
        ],
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  }
}
—
Product
product
NVDOpenImageIO
receipt
Source
NVD
Its words
OpenImageIO
Read by
field:cve.affected[].affectedData[].product
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCOpenImageIO
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "OpenImageIO",
            "vendor": "AcademySoftwareFoundation",
            "versions": [
              {
                "status": "affected",
                "version": "< 3.0.21.0"
              },
              {
                "status": "affected",
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              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
            ]
          }
        ],
        "source": "security-advisories@github.com"
      }
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              },
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      }
    ],
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    "lastModified": "2026-09-29T18:56:40.093",
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            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
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            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "security-advisories@github.com",
          "type": "Secondary"
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      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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                "technicalImpact": "total"
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            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-18T17:33:32.010538Z",
            "version": "2.0.3"
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      ]
    },
    "published": "2026-09-18T16:17:07.687",
    "references": [
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        "source": "security-advisories@github.com",
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        "source": "security-advisories@github.com",
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          "Patch"
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      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
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      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
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        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      }
    ],
    "sourceIdentifier": "security-advisories@github.com",
    "vulnStatus": "Analyzed",
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        ],
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        "type": "Secondary"
      }
    ]
  }
}
—
Severity
severity
NVDHIGH
From 7.0 to 8.9.
receipt
Source
NVD
Its words
HIGH
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCHIGH
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "OpenImageIO",
            "vendor": "AcademySoftwareFoundation",
            "versions": [
              {
                "status": "affected",
                "version": "< 3.0.21.0"
              },
              {
                "status": "affected",
                "version": ">= 3.1.0.0, < 3.1.16.0"
              },
              {
                "status": "affected",
                "version": ">= 3.2.0.0-dev, < 3.2.0.3-beta1"
              }
            ]
          }
        ],
        "source": "security-advisories@github.com"
      }
    ],
    "configurations": [
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                "versionEndExcluding": "3.0.21.0",
                "vulnerable": true
              },
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                "matchCriteriaId": "1BF66CB3-6DE8-41F1-98DF-16E17968F4F0",
                "versionEndIncluding": "3.1.16.0",
                "versionStartIncluding": "3.1.0.0",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:openimageio:openimageio:3.2.0.0:dev:*:*:*:*:*:*",
                "matchCriteriaId": "F43FE0AC-4CFC-485D-8370-37336EB2CEA0",
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    "cveTags": [],
    "descriptions": [
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high
Status
status
NVDAnalyzed
receipt
Source
NVD
Its words
Analyzed
Read by
field:cve.vulnStatus
Said since
2026-10-02 12:00 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-02 12:00 UTCAnalyzed
2026-09-29 09:45 UTCUndergoing Analysis
What the source handed over
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}
—
Technical impact
technical_impact
NVDtotal
The attacker gains full control of the component, or all of its information.
receipt
Source
NVD
Its words
total
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].technicalImpact
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCtotal
2026-09-29 09:45 UTC—
What the source handed over
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—
Vendor
vendor
NVDAcademySoftwareFoundation
receipt
Source
NVD
Its words
AcademySoftwareFoundation
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCAcademySoftwareFoundation
2026-09-29 09:45 UTC—
What the source handed over
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          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"
      },
      {
        "source": "security-advisories@github.com",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      },
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "tags": [
          "Exploit",
          "Mitigation",
          "Vendor Advisory"
        ],
        "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"
      }
    ],
    "sourceIdentifier": "security-advisories@github.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-787"
          }
        ],
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  }
}
—
Every claim, by kind

vulnerability

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::read_native_tile(), ImageSpec::tile_bytes(true), m_header.pixel_bytes(), ZBUFFER, and m_buf, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
zetlyn/cve-nvd · 2026-09-18
automatable no cvss 7.8 cvss_vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H cwe CWE-787 exploitation poc product OpenImageIO severity HIGH status Analyzed technical_impact total vendor AcademySoftwareFoundation source