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CVE-2021-45911

Estado: ModificadaAlta (7.8)—

An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow in the main function. It allows an attacker to write 2 bytes outside the boundaries of the buffer.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Debian — Debian LinuxGif2apng Project — Gif2apng

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-45911",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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          "attackComplexity": "LOW",
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  "affected": [
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      "affectedData": [
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  "published": "2021-12-28T01:15:07.600",
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        "Mailing List",
        "Third Party Advisory"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in gif2apng 1.9. There is a heap-based buffer overflow in the main function. It allows an attacker to write 2 bytes outside the boundaries of the buffer."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en gif2apng versión 1.9. Se presenta un desbordamiento del búfer en la región heap de la memoria en la función main. Permite a un atacante escribir 2 bytes fuera de los límites del búfer"
    }
  ],
  "lastModified": "2026-06-17T04:14:14.457",
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}