CVE-2006-4573

Estado: ModificadaBaja (2.6)—
Multiple unspecified vulnerabilities in the "utf8 combining characters handling" (utf8_handle_comb function in encoding.c) in screen before 4.0.3 allows user-assisted attackers to cause a denial of service (crash or hang) via certain UTF8 sequences.
CVSS

Versión: 2.0
Vector: AV:N/AC:H/Au:N/C:N/I:N/A:P
Puntuación base: 2.6
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 2.29%
Percentil entre todas las CVEs puntuadas: 83
Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)

GNU — Screen
CWE

NVD-CWE-Other
Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2006-4573",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2006-10-24T18:07:00.000",
  "references": [
    {
      "url": "http://docs.info.apple.com/article.html?artnum=305530",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2007/May/msg00004.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.gnu.org/archive/html/screen-users/2006-10/msg00028.html",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22573",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22583",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/22611",
      "source": "secalert@redhat.com"
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    {
      "url": "http://secunia.com/advisories/22647",
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    {
      "url": "http://secunia.com/advisories/22649",
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    {
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    {
      "url": "http://secunia.com/advisories/22726",
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    {
      "url": "http://secunia.com/advisories/25402",
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    {
      "url": "http://security.gentoo.org/glsa/glsa-200611-01.xml",
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    {
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    {
      "url": "http://www.debian.org/security/2006/dsa-1202",
      "source": "secalert@redhat.com"
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    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:191",
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    {
      "url": "http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.026-screen.html",
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    {
      "url": "http://www.securityfocus.com/bid/20727",
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    {
      "url": "http://www.ubuntu.com/usn/usn-370-1",
      "source": "secalert@redhat.com"
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    {
      "url": "http://www.vupen.com/english/advisories/2006/4189",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/1939",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-734",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://docs.info.apple.com/article.html?artnum=305530",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.apple.com/archives/security-announce/2007/May/msg00004.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.gnu.org/archive/html/screen-users/2006-10/msg00028.html",
      "tags": [
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    },
    {
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    {
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    },
    {
      "url": "http://secunia.com/advisories/22611",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://secunia.com/advisories/22647",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://secunia.com/advisories/22649",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22707",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/22726",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25402",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200611-01.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.480775",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2006/dsa-1202",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDKSA-2006:191",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openpkg.org/security/advisories/OpenPKG-SA-2006.026-screen.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/20727",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-370-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/4189",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.vupen.com/english/advisories/2007/1939",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://issues.rpath.com/browse/RPL-734",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple unspecified vulnerabilities in the \"utf8 combining characters handling\" (utf8_handle_comb function in encoding.c) in screen before 4.0.3 allows user-assisted attackers to cause a denial of service (crash or hang) via certain UTF8 sequences."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades no especificadas en el \"manejo de combinaciones de caracteres utf8\" (función utf8_handle_comb en encoding.c) en screen anterior a 4.0.3 permite a atacantes con la complicidad del usuario provocar una denegación de servicio (caída o cuelgue) mediante ciertas secuencias UTF8."
    }
  ],
  "lastModified": "2026-06-16T22:29:22.570",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EB4ADD67-7FCD-4034-8F6A-32F579104659",
              "versionEndIncluding": "4.0.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}