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CVE-2026-65969 (GCVE-0-2026-65969)

Vulnerability from cvelistv5 – Published: 2026-09-18 15:51 – Updated: 2026-09-18 15:51
VLAI
Title
OpenImageIO: TGA-to-GIF palette split signed overflow causes SIGSEGV
Summary
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 truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, 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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version CPE status
AcademySoftwareFoundation OpenImageIO Affected: < 3.0.21.0
Affected: >= 3.1.0.0, < 3.1.16.0
Affected: >= 3.2.0.0-dev, < 3.2.0.3-beta1
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{
  "containers": {
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        {
          "product": "OpenImageIO",
          "vendor": "AcademySoftwareFoundation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.21.0"
            },
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              "status": "affected",
              "version": "\u003e= 3.1.0.0, \u003c 3.1.16.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.2.0.0-dev, \u003c 3.2.0.3-beta1"
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          "value": "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 truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, 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."
        }
      ],
      "metrics": [
        {
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
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      "providerMetadata": {
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        "shortName": "GitHub_M"
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          "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-9mwc-fjgj-8wmq"
        },
        {
          "name": "https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5292",
          "tags": [
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          "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5292"
        },
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          "name": "https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/134977da625a84fc5a09a34321806f1fe0093c24",
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        },
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          "tags": [
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          "tags": [
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        }
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      "source": {
        "advisory": "GHSA-9mwc-fjgj-8wmq",
        "discovery": "UNKNOWN"
      },
      "title": "OpenImageIO: TGA-to-GIF palette split signed overflow causes SIGSEGV"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-65969",
    "datePublished": "2026-09-18T15:51:10.998Z",
    "dateReserved": "2026-07-23T18:15:14.580Z",
    "dateUpdated": "2026-09-18T15:51:10.998Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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                "vendor": "AcademySoftwareFoundation",
                "versions": [
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          }
        ],
        "id": "CVE-2026-65969",
        "lastModified": "2026-09-18T16:17:08.433",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
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                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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        "vulnStatus": "Received",
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                "value": "CWE-125"
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    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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