CVE-2010-1203

Status: ModifiedHigh (9.3)—
The JavaScript engine in Mozilla Firefox 3.6.x before 3.6.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors that trigger an assertion failure in jstracer.cpp.
CVSS

Version: 2.0
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Base score: 9.3
Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.87%
Percentile among all scored CVEs: 90
Score date: 10/13/2026
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

NVD-CWE-noinfo
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2010-1203",
  "cveTags": [],
  "metrics": {
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        "cvssData": {
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          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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      "affectedData": [
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          "versions": [
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              "version": "n/a"
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  "published": "2010-06-24T12:30:01.703",
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      "lang": "en",
      "value": "The JavaScript engine in Mozilla Firefox 3.6.x before 3.6.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors that trigger an assertion failure in jstracer.cpp."
    },
    {
      "lang": "es",
      "value": "El motor de JavaScript en Firefox de Mozilla versiones  3.6.x anteriores a 3.6.4,  permite a los atacantes remotos causar una denegación de servicio (corrupción de memoria y bloqueo de aplicación) o posiblemente ejecutar código arbitrario por medio de vectores que desencadenan un fallo de aserción en el archivo jstracer.cpp."
    }
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  "lastModified": "2026-06-16T23:17:50.457",
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