FKIE_CVE-2026-41069

Vulnerability from fkie_nvd - Published: 2026-05-22 21:16 - Updated: 2026-07-23 11:10
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode.
References
security-advisories@github.comhttps://github.com/strukturag/libheif/releases/tag/v1.22.0Product, Release Notes
security-advisories@github.comhttps://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rExploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576rExploit, Vendor Advisory
Impacted products
Vendor Product Version
struktur libheif *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libheif",
          "vendor": "strukturag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.22.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:struktur:libheif:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CB01CAAF-1D64-461B-8CC0-3CF2FBAC60A5",
              "versionEndExcluding": "1.22.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count \u003e 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode."
    },
    {
      "lang": "es",
      "value": "libheif es un decodificador y codificador de formato de archivo HEIF y AVIF. En las versiones 1.21.2 y anteriores, un archivo de secuencia HEIF malformado puede desencadenar una lectura fuera de l\u00edmites en la l\u00f3gica central de an\u00e1lisis de secuencias, causando DoS. Un archivo malformado puede tener stco.entry_count == 0 (sin crear fragmentos) mientras que a\u00fan pasa la validaci\u00f3n porque saio.entry_count == 0 coincide, pero con saiz.sample_count \u003e 0 el constructor de SampleAuxInfoReader a\u00fan entra en su bucle. Esto lleva a una desreferencia fuera de l\u00edmites en los chunks[0] vac\u00edos en modo fragmentado."
    }
  ],
  "id": "CVE-2026-41069",
  "lastModified": "2026-07-23T11:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41069",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T12:15:49.971528Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-22T21:16:43.327",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/strukturag/libheif/releases/tag/v1.22.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576r"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-p82x-fpmv-576r"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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