CVE-2007-1256

Status: ModifiedMedium (6.8)—

Mozilla Firefox 2.0.0.2 allows remote attackers to spoof the address bar, favicons, and document source, and perform updates in the context of arbitrary websites, by repeatedly setting document.location in the onunload attribute when linking to another website, a variant of CVE-2007-1092.

CVSS

Version: 2.0
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Base score: 6.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 1.07%
Percentile among all scored CVEs: 64
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).

Affected technologies (1)

Mozilla — Firefox

CWEs

CWE-119

References

Raw JSON (NVD)

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{
  "id": "CVE-2007-1256",
  "cveTags": [],
  "metrics": {
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        "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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        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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      "affectedData": [
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          "versions": [
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  "published": "2007-03-03T20:19:00.000",
  "references": [
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      "url": "http://marc.info/?l=full-disclosure&m=117258301222007&w=2",
      "tags": [
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      "source": "cve@mitre.org"
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      "tags": [
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    {
      "url": "http://www.securityfocus.com/archive/1/461437/100/0/threaded",
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      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mozilla Firefox 2.0.0.2 allows remote attackers to spoof the address bar, favicons, and document source, and perform updates in the context of arbitrary websites, by repeatedly setting document.location in the onunload attribute when linking to another website, a variant of CVE-2007-1092."
    },
    {
      "lang": "es",
      "value": "Mozilla Firefox 2.0.0.2 permite a atacantes remotos parodiar la barra de direcciones, iconos favoritos (favicons), y código fuente, y realizar actualizaciones en el contexto de sitios web de su elección, al poner repetidamente document.location en el atributo onunload cuando se enlaza otro sitio web, una variante de CVE-2007-1092."
    }
  ],
  "lastModified": "2026-06-16T22:37:14.433",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "cve@mitre.org"
}