« Volver al listado

CVE-2026-3502

Estado: AnalizadaAlta (7.8)⚠ Explotación activa

TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.

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).

CISA KEV — explotada activamente

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CWE-494 (descarga sin verificación) + interacción del usuario (UI:R) sugieren explotación cliente. T1195.002 (compromiso de canal de actualización) es el vector primario; ejecución de código es el impacto secundario derivado.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Update SoftwareVulnerability ScanningRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution Prevention

Tecnologías afectadas (1)

Trueconf — Trueconf

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-3502",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3502",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-31T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@checkpoint.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "cve@checkpoint.com",
      "affectedData": [
        {
          "vendor": "TrueConf",
          "product": "TrueConf Client",
          "versions": [
            {
              "status": "affected",
              "version": "TrueConf Client versions 8.1.0 through 8.5.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-30T19:16:27.053",
  "references": [
    {
      "url": "https://trueconf.com/blog/update/trueconf-8-5",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "source": "cve@checkpoint.com"
    },
    {
      "url": "https://research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-3502",
      "tags": [
        "US Government Resource"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@checkpoint.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-494"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user."
    },
    {
      "lang": "es",
      "value": "TrueConf Client descarga código de actualización de la aplicación y lo aplica sin realizar verificación. Un atacante que es capaz de influir en la ruta de entrega de la actualización puede sustituir una carga útil de actualización manipulada. Si la carga útil es ejecutada o instalada por el actualizador, esto puede resultar en ejecución de código arbitrario en el contexto del proceso de actualización o del usuario."
    }
  ],
  "lastModified": "2026-06-17T10:43:41.010",
  "cisaActionDue": "2026-04-16",
  "cisaExploitAdd": "2026-04-02",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:trueconf:trueconf:*:*:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C61E9BE0-CED2-4518-933B-7538A4E8F890",
              "versionEndExcluding": "8.5.3.884"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@checkpoint.com",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "TrueConf Client Download of Code Without Integrity Check Vulnerability"
}