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CVE-2026-12703

Estado: AplazadaAlta (8)—

TeamViewer Full Client and Host for macOS before version 15.80 contain a business logic error that can allow an authenticated attacker to bypass a configured 2FA for Connections approval flow via Unattended Access and establish a remote connection to an affected macOS host.

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).

🎯 Técnicas ATT&CK

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

AV:N y PR:H (acceso remoto autenticado) típico de T1210. Bypass de 2FA permite acceso no autorizado (T1078) y conexión remota a host macOS (T1021.007, remote service session hijacking).

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

Privileged Account ManagementMulti-factor AuthenticationApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser Training

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Teamviewer — Full ClientAITeamviewer — HostAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-12703",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-12703",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-29T15:07:03.248622Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@teamviewer.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.3
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@teamviewer.com",
      "affectedData": [
        {
          "vendor": "TeamViewer",
          "modules": [
            "Full Client",
            "Host"
          ],
          "product": "Remote",
          "versions": [
            {
              "status": "affected",
              "version": "15.00",
              "lessThan": "15.80",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "MacOS"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "TeamViewer",
          "modules": [
            "Full Client",
            "Host"
          ],
          "product": "Tensor",
          "versions": [
            {
              "status": "affected",
              "version": "15.00",
              "lessThan": "15.80",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "MacOS"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "TeamViewer",
          "modules": [
            "Full Client",
            "Host"
          ],
          "product": "ONE",
          "versions": [
            {
              "status": "affected",
              "version": "15.00",
              "lessThan": "15.80",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "MacOS"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-07-29T15:16:20.183",
  "references": [
    {
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1007/",
      "source": "psirt@teamviewer.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@teamviewer.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "TeamViewer Full Client and Host for macOS before version 15.80 contain a business logic error that can allow an authenticated attacker to bypass a configured 2FA for Connections approval flow via Unattended Access and establish a remote connection to an affected macOS host."
    }
  ],
  "lastModified": "2026-07-30T16:45:00.353",
  "sourceIdentifier": "psirt@teamviewer.com"
}