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CVE-2020-37132

Estado: AnalizadaMedia (6.7)—

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher functionality.

CVSS

Probabilidad de explotación (EPSS)

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)

Uvnc — Ultravnc

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-37132",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2020-37132",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-02-05T18:43:54.838443Z"
        }
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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          "integrityImpact": "NONE",
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          "confidentialityImpact": "NONE"
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    "cvssMetricV40": [
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        "type": "Secondary",
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        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "Automatable": "NOT_DEFINED",
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "vendor": "UltraVNC Team",
          "product": "UltraVNC Launcher",
          "versions": [
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              "status": "affected",
              "version": "1.2.4.0"
            }
          ]
        }
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  ],
  "published": "2026-02-05T17:16:08.363",
  "references": [
    {
      "url": "https://www.exploit-db.com/exploits/48290",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
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    },
    {
      "url": "https://www.uvnc.com/",
      "tags": [
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    },
    {
      "url": "https://www.vulncheck.com/advisories/ultravnc-launcher-password-denial-of-service",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
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      "type": "Primary",
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    {
      "lang": "en",
      "value": "UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. Attackers can paste an overly long 300-character string into the password field to trigger an application crash and prevent normal launcher functionality."
    },
    {
      "lang": "es",
      "value": "UltraVNC Launcher 1.2.4.0 contiene una vulnerabilidad de denegación de servicio en sus propiedades de configuración de contraseña que permite a atacantes locales bloquear la aplicación. Los atacantes pueden pegar una cadena excesivamente larga de 300 caracteres en el campo de contraseña para provocar un bloqueo de la aplicación y evitar la funcionalidad normal del lanzador."
    }
  ],
  "lastModified": "2026-06-17T03:17:04.387",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "vulnerable": true,
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              "versionEndIncluding": "1.2.4.0"
            }
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          "operator": "OR"
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  "sourceIdentifier": "disclosure@vulncheck.com"
}