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CVE-2006-1990

Status: ModifiedMedium (5)—
Severity5Medium · CVSS 2.0
Exploitation probability11 %higher than 96% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

Integer overflow in the wordwrap function in string.c in PHP 4.4.2 and 5.1.2 might allow context-dependent attackers to execute arbitrary code via certain long arguments that cause a small buffer to be allocated, which triggers a heap-based buffer overflow in a memcpy function call, a different vulnerability than CVE-2002-1396.

CVSS

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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
11 %
Percentile among all scored CVEs
96
Score date
10/22/2026

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)

PHP — PHP

CWEs

References

Show 74 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2006-1990",
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          "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"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2006-04-24T23:02:00.000",
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Integer overflow in the wordwrap function in string.c in PHP 4.4.2 and 5.1.2 might allow context-dependent attackers to execute arbitrary code via certain long arguments that cause a small buffer to be allocated, which triggers a heap-based buffer overflow in a memcpy function call, a different vulnerability than CVE-2002-1396."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de entero en la función wordwrap en string.c en PHP 4.4.2 y 5.1.2 podría permitir a atacantes dependientes del contexto ejecutar código arbitrario a través de ciertos argumentos largos que provoca la asignación de un búfer pequeño, lo que desencadena un desbordamiento de búfer basado en memoria dinámica en una llamada a la función memcpy, una vulnerabilidad diferente a CVE-2002-1396."
    }
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  "lastModified": "2026-06-16T22:24:05.163",
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}