CVE-2008-1801

Status: ModifiedHigh (9.3)—💥 Exploit
Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a Remote Desktop Protocol (RDP) request with a small length field.
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: 13%
Percentile among all scored CVEs: 96
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).
💥 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 · rdesktop 1.5.0 - 'iso_recv_msg()' Integer Underflow (PoC) (5/8/2008)
Affected technologies (1)

Rdesktop — Rdesktop
CWEs

CWE-189
References

Raw JSON (NVD)

Show
{
  "id": "CVE-2008-1801",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "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
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2008-05-12T16:20:00.000",
  "references": [
    {
      "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=696",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://rdesktop.cvs.sourceforge.net/rdesktop/rdesktop/iso.c?r1=1.19&r2=1.20&pathrev=HEAD",
      "tags": [
        "Exploit"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/30118",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/30248",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/30380",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/30713",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/31222",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/31224",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/31928",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200806-04.xml",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.395286",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-240708-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://support.avaya.com/elmodocs2/security/ASA-2008-360.htm",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2008/dsa-1573",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2008:101",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00244.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00270.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00296.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0575.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0576.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0725.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/29097",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id?1019990",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-646-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1467/references",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/2403",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/42272",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11570",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.exploit-db.com/exploits/5561",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=696",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://rdesktop.cvs.sourceforge.net/rdesktop/rdesktop/iso.c?r1=1.19&r2=1.20&pathrev=HEAD",
      "tags": [
        "Exploit"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30118",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30248",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30380",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/30713",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/31222",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/31224",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/31928",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200806-04.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.395286",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://sunsolve.sun.com/search/document.do?assetkey=1-26-240708-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.avaya.com/elmodocs2/security/ASA-2008-360.htm",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2008/dsa-1573",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2008:101",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00244.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00270.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/archives/fedora-package-announce/2008-May/msg00296.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0575.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0576.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2008-0725.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/29097",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1019990",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-646-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/1467/references",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2008/2403",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/42272",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11570",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/5561",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a Remote Desktop Protocol (RDP) request with a small length field."
    },
    {
      "lang": "es",
      "value": "Desbordamiento inferior de entero en la función iso_recv_msg (iso.c) de rdesktop 1.5.0 permite a atacantes remotos provocar una denegación de servicio (caída) y posiblemente ejecutar código de su elección mediante una petición Remote Desktop Protocol (RDP) (Protocolo de Escritorio Remoto) con un campo de longitud pequeño."
    }
  ],
  "lastModified": "2026-06-16T22:52:30.737",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rdesktop:rdesktop:1.5.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B97D70B-2614-4EDB-A74E-217E42076C66"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}