FKIE_CVE-2026-12703

Vulnerability from fkie_nvd - Published: 2026-07-29 15:16 - Updated: 2026-07-29 16:17
Severity
8.0 (High) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Summary
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.
References
psirt@teamviewer.comhttps://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1007/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Full Client",
            "Host"
          ],
          "platforms": [
            "MacOS"
          ],
          "product": "Remote",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "15.80",
              "status": "affected",
              "version": "15.00",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Full Client",
            "Host"
          ],
          "platforms": [
            "MacOS"
          ],
          "product": "Tensor",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "15.80",
              "status": "affected",
              "version": "15.00",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Full Client",
            "Host"
          ],
          "platforms": [
            "MacOS"
          ],
          "product": "ONE",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "15.80",
              "status": "affected",
              "version": "15.00",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@teamviewer.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TeamViewer Full Client and Host\u00a0for macOS before version 15.80\u00a0contain\u00a0a business logic error that can allow an authenticated attacker to bypass\u00a0a\u00a0configured 2FA\u00a0for\u00a0Connections approval flow\u00a0via\u00a0Unattended\u00a0Access\u00a0and\u00a0establish\u00a0a remote connection to an affected macOS host."
    }
  ],
  "id": "CVE-2026-12703",
  "lastModified": "2026-07-29T16:17:49.380",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 6.0,
        "source": "psirt@teamviewer.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-12703",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-29T15:07:03.248622Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-29T15:16:20.183",
  "references": [
    {
      "source": "psirt@teamviewer.com",
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1007/"
    }
  ],
  "sourceIdentifier": "psirt@teamviewer.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ],
      "source": "psirt@teamviewer.com",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.