FKIE_CVE-2026-3949

Vulnerability from fkie_nvd - Published: 2026-03-11 19:16 - Updated: 2026-04-22 21:30
Severity ?
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.
References
cna@vuldb.comhttps://github.com/biniamf/pocs/tree/main/libheif_vvdec
cna@vuldb.comhttps://github.com/strukturag/libheif/
cna@vuldb.comhttps://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03
cna@vuldb.comhttps://github.com/strukturag/libheif/issues/1712
cna@vuldb.comhttps://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531
cna@vuldb.comhttps://vuldb.com/?ctiid.350381
cna@vuldb.comhttps://vuldb.com/?id.350381
cna@vuldb.comhttps://vuldb.com/?submit.765979
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue."
    },
    {
      "lang": "es",
      "value": "Se determin\u00f3 una vulnerabilidad en strukturag libheif hasta la versi\u00f3n 1.21.2. Esto afecta a la funci\u00f3n vvdec_push_data2 del archivo libheif/plugins/decoder_vvdec.cc del componente HEIF File Parser. Ejecutar una manipulaci\u00f3n del argumento size puede llevar a una lectura fuera de l\u00edmites. El ataque debe lanzarse localmente. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado. Este parche se llama b97c8b5f198b27f375127cd597a35f2113544d03. Es aconsejable implementar un parche para corregir este problema."
    }
  ],
  "id": "CVE-2026-3949",
  "lastModified": "2026-04-22T21:30:26.497",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 1.7,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-11T19:16:05.297",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/biniamf/pocs/tree/main/libheif_vvdec"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/strukturag/libheif/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/strukturag/libheif/issues/1712"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?ctiid.350381"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?id.350381"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/?submit.765979"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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