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CVE-2004-0774

Status: ModifiedHigh (7.8)—

RealNetworks Helix Universal Server 9.0.2 for Linux and 9.0.3 for Windows allows remote attackers to cause a denial of service (CPU and memory exhaustion) via a POST request with a Content-Length header set to -1.

CVSS

Exploitation probability (EPSS)

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 (2)

Realnetworks — Helix Universal Mobile Server AND GatewayRealnetworks — Helix Universal Server

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2004-0774",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2004-11-03T05:00:00.000",
  "references": [
    {
      "url": "http://www.idefense.com/application/poi/display?id=151&type=vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17648",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.idefense.com/application/poi/display?id=151&type=vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/17648",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "RealNetworks Helix Universal Server 9.0.2 for Linux and 9.0.3 for Windows allows remote attackers to cause a denial of service (CPU and memory exhaustion) via a POST request with a Content-Length header set to -1."
    },
    {
      "lang": "es",
      "value": "RealNetworks Helix Universal Server 9.0.2 para Linux y 9.0.3 for Windows permite a atacantes remotos causar una denegación de servicio (consumición de memoria y CPU) mediante peticiones POST con una cabecera Content-Length puesta a -1."
    }
  ],
  "lastModified": "2026-06-16T22:06:20.840",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:realnetworks:helix_universal_mobile_server_and_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7418D2B2-E90F-4460-BF5B-8C1D0599DDDC",
              "versionEndIncluding": "10.3.1.716"
            },
            {
              "criteria": "cpe:2.3:a:realnetworks:helix_universal_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CBE15C8F-4E6C-4060-8652-892FC4AB02CD",
              "versionEndIncluding": "9.0.4.958"
            },
            {
              "criteria": "cpe:2.3:a:realnetworks:helix_universal_server:9.0.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6971157F-B1A5-4565-A90B-29FC3F74DD2C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}