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CVE-2021-30472

Status: ModifiedHigh (7.8)—

A flaw was found in PoDoFo 0.9.7. A stack-based buffer overflow in PdfEncryptMD5Base::ComputeOwnerKey function in PdfEncrypt.cpp is possible because of a improper check of the keyLength value.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Podofo Project — Podofo

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-30472",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "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,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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    "cvssMetricV31": [
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        "type": "Primary",
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          "scope": "UNCHANGED",
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  },
  "affected": [
    {
      "source": "patrick@puiterwijk.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "podofo",
          "versions": [
            {
              "status": "affected",
              "version": "PoDoFo 0.9.7"
            }
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  ],
  "published": "2021-05-26T22:15:08.123",
  "references": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1947458",
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        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "patrick@puiterwijk.org",
      "description": [
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          "lang": "en",
          "value": "CWE-119"
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      ]
    },
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in PoDoFo 0.9.7. A stack-based buffer overflow in PdfEncryptMD5Base::ComputeOwnerKey function in PdfEncrypt.cpp is possible because of a improper check of the keyLength value."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en PoDoFo versión 0.9.7. Un desbordamiento de búfer en la región stack de la memoria en la función PdfEncryptMD5Base::ComputeOwnerKey en el archivo PdfEncrypt.cpp es posible debido a una comprobación inapropiada del valor keyLength"
    }
  ],
  "lastModified": "2026-06-17T03:50:18.297",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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}