CVE-2009-2478

Status: ModifiedMedium (5)—💥 Exploit

Mozilla Firefox 3.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via unspecified vectors, related to a "flash bug."

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Base score: 5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 7.81%
Percentile among all scored CVEs: 95
Score date: 10/14/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Mozilla Firefox 3.5 - 'Font tags' Remote HeapSpray (1) (7/17/2009)
Published on Exploit-DB · Mozilla Firefox 3.5 - Font tags Remote Buffer Overflow (7/13/2009)

Affected technologies (1)

Mozilla — Firefox

CWEs

CWE-189

References

Raw JSON (NVD)

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{
  "id": "CVE-2009-2478",
  "cveTags": [],
  "metrics": {
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        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
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  ],
  "published": "2009-07-16T15:30:00.797",
  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=502648",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=503286",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-189"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mozilla Firefox 3.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via unspecified vectors, related to a \"flash bug.\""
    },
    {
      "lang": "es",
      "value": "Mozilla Firefox v3.5 permite a los atacantes remotos causar una denegación de servicio (puntero NULO desreferenciado y caída de la aplicación) a través de vectores no especificado, en relación a un \"flash bug.\""
    }
  ],
  "lastModified": "2026-06-16T23:09:32.270",
  "configurations": [
    {
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}