CVE-2008-1803

Status: ModifiedHigh (9.3)—
Integer signedness error in the xrealloc function (rdesktop.c) in RDesktop 1.5.0 allows remote attackers to execute arbitrary code via unknown parameters that trigger a heap-based overflow. NOTE: the role of the channel_process function was not specified by the original researcher.
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: 6.74%
Percentile among all scored CVEs: 94
Score date: 10/15/2026
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)

Rdesktop — Rdesktop
CWEs

CWE-189
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2008-1803",
  "cveTags": [],
  "metrics": {
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        "cvssData": {
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          "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": true,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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          "versions": [
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              "version": "n/a"
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  "published": "2008-05-12T22:20:00.000",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-189"
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  "descriptions": [
    {
      "lang": "en",
      "value": "Integer signedness error in the xrealloc function (rdesktop.c) in RDesktop 1.5.0 allows remote attackers to execute arbitrary code via unknown parameters that trigger a heap-based overflow.  NOTE: the role of the channel_process function was not specified by the original researcher."
    },
    {
      "lang": "es",
      "value": "Un error en la propiedad signedness de enteros en la función xrealloc (archivo rdesktop.c) en RDesktop versión 1.5.0,  permite a atacantes remotos ejecutar código arbitrario por medio de parámetros desconocidos que desencadenan un desbordamiento en la región heap de la memoria. NOTA: el rol de la función channel_process no fue especificado por el investigador original."
    }
  ],
  "lastModified": "2026-06-16T22:52:31.113",
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